diff --git a/lib/protocol.d.ts b/lib/protocol.d.ts
index cb968d0138b..cbcae0ce83f 100644
--- a/lib/protocol.d.ts
+++ b/lib/protocol.d.ts
@@ -1547,6 +1547,10 @@ declare namespace ts.server.protocol {
          * true if install request succeeded, otherwise - false
          */
         installSuccess: boolean;
+        /**
+         * version of typings installer
+         */
+        typingsInstallerVersion: string;
     }
     interface NavBarResponse extends Response {
         body?: NavigationBarItem[];
diff --git a/lib/tsc.js b/lib/tsc.js
index 662a7f2bc49..fa635d2ea07 100644
--- a/lib/tsc.js
+++ b/lib/tsc.js
@@ -123,6 +123,10 @@ var ts;
     })(performance = ts.performance || (ts.performance = {}));
 })(ts || (ts = {}));
 var ts;
+(function (ts) {
+    ts.version = "2.0.10";
+})(ts || (ts = {}));
+var ts;
 (function (ts) {
     var createObject = Object.create;
     ts.collator = typeof Intl === "object" && typeof Intl.Collator === "function" ? new Intl.Collator() : undefined;
@@ -37138,7 +37142,6 @@ var ts;
 })(ts || (ts = {}));
 var ts;
 (function (ts) {
-    ts.version = "2.0.9";
     var emptyArray = [];
     function findConfigFile(searchPath, fileExists, configName) {
         if (configName === void 0) { configName = "tsconfig.json"; }
diff --git a/lib/tsserver.js b/lib/tsserver.js
index 9d57b342d34..4e581524abf 100644
--- a/lib/tsserver.js
+++ b/lib/tsserver.js
@@ -128,6 +128,10 @@ var ts;
     })(performance = ts.performance || (ts.performance = {}));
 })(ts || (ts = {}));
 var ts;
+(function (ts) {
+    ts.version = "2.0.10";
+})(ts || (ts = {}));
+var ts;
 (function (ts) {
     var createObject = Object.create;
     ts.collator = typeof Intl === "object" && typeof Intl.Collator === "function" ? new Intl.Collator() : undefined;
@@ -38553,7 +38557,6 @@ var ts;
 })(ts || (ts = {}));
 var ts;
 (function (ts) {
-    ts.version = "2.0.9";
     var emptyArray = [];
     function findConfigFile(searchPath, fileExists, configName) {
         if (configName === void 0) { configName = "tsconfig.json"; }
@@ -56347,7 +56350,8 @@ var ts;
                             telemetryEventName: "typingsInstalled",
                             payload: {
                                 installedPackages: response.packagesToInstall.join(","),
-                                installSuccess: response.installSuccess
+                                installSuccess: response.installSuccess,
+                                typingsInstallerVersion: response.typingsInstallerVersion
                             }
                         };
                         var eventName = "telemetry";
diff --git a/lib/tsserverlibrary.d.ts b/lib/tsserverlibrary.d.ts
index 4ea77e69fdd..e1160ddb706 100644
--- a/lib/tsserverlibrary.d.ts
+++ b/lib/tsserverlibrary.d.ts
@@ -664,6 +664,7 @@ declare namespace ts.server.protocol {
     interface TypingsInstalledTelemetryEventPayload {
         installedPackages: string;
         installSuccess: boolean;
+        typingsInstallerVersion: string;
     }
     interface NavBarResponse extends Response {
         body?: NavigationBarItem[];
@@ -2930,6 +2931,9 @@ declare namespace ts.performance {
     function enable(): void;
     function disable(): void;
 }
+declare namespace ts {
+    const version: string;
+}
 declare namespace ts {
     const enum Ternary {
         False = 0,
@@ -8258,7 +8262,6 @@ declare namespace ts {
     function emitFiles(resolver: EmitResolver, host: EmitHost, targetSourceFile: SourceFile, emitOnlyDtsFiles?: boolean): EmitResult;
 }
 declare namespace ts {
-    const version: string;
     function findConfigFile(searchPath: string, fileExists: (fileName: string) => boolean, configName?: string): string;
     function resolveTripleslashReference(moduleName: string, containingFile: string): string;
     function computeCommonSourceDirectoryOfFilenames(fileNames: string[], currentDirectory: string, getCanonicalFileName: (fileName: string) => string): string;
diff --git a/lib/tsserverlibrary.js b/lib/tsserverlibrary.js
index 597d5236af5..3cff8ec5e68 100644
--- a/lib/tsserverlibrary.js
+++ b/lib/tsserverlibrary.js
@@ -128,6 +128,10 @@ var ts;
     })(performance = ts.performance || (ts.performance = {}));
 })(ts || (ts = {}));
 var ts;
+(function (ts) {
+    ts.version = "2.0.10";
+})(ts || (ts = {}));
+var ts;
 (function (ts) {
     var createObject = Object.create;
     ts.collator = typeof Intl === "object" && typeof Intl.Collator === "function" ? new Intl.Collator() : undefined;
@@ -38553,7 +38557,6 @@ var ts;
 })(ts || (ts = {}));
 var ts;
 (function (ts) {
-    ts.version = "2.0.9";
     var emptyArray = [];
     function findConfigFile(searchPath, fileExists, configName) {
         if (configName === void 0) { configName = "tsconfig.json"; }
diff --git a/lib/typescript.d.ts b/lib/typescript.d.ts
index 39d6b7421c8..7c2d5744fd1 100644
--- a/lib/typescript.d.ts
+++ b/lib/typescript.d.ts
@@ -1758,6 +1758,10 @@ declare namespace ts {
         _children: Node[];
     }
 }
+declare namespace ts {
+    /** The version of the TypeScript compiler release */
+    const version: string;
+}
 declare namespace ts {
     type FileWatcherCallback = (fileName: string, removed?: boolean) => void;
     type DirectoryWatcherCallback = (fileName: string) => void;
@@ -1897,8 +1901,6 @@ declare namespace ts {
     function resolveModuleName(moduleName: string, containingFile: string, compilerOptions: CompilerOptions, host: ModuleResolutionHost): ResolvedModuleWithFailedLookupLocations;
 }
 declare namespace ts {
-    /** The version of the TypeScript compiler release */
-    const version: string;
     function findConfigFile(searchPath: string, fileExists: (fileName: string) => boolean, configName?: string): string;
     function resolveTripleslashReference(moduleName: string, containingFile: string): string;
     /**
diff --git a/lib/typescript.js b/lib/typescript.js
index 6e73e1ab4da..0bd58928c89 100644
--- a/lib/typescript.js
+++ b/lib/typescript.js
@@ -1004,6 +1004,11 @@ var ts;
 })(ts || (ts = {}));
 /// <reference path="types.ts"/>
 /// <reference path="performance.ts" />
+var ts;
+(function (ts) {
+    /** The version of the TypeScript compiler release */
+    ts.version = "2.0.10";
+})(ts || (ts = {}));
 /* @internal */
 var ts;
 (function (ts) {
@@ -1694,7 +1699,7 @@ var ts;
             return 1 /* GreaterThan */;
         if (ignoreCase) {
             if (ts.collator && String.prototype.localeCompare) {
-                // accent means a ≠ b, a ≠ á, a = A
+                // accent means a ? b, a ? a´, a = A
                 var result = a.localeCompare(b, /*locales*/ undefined, { usage: "sort", sensitivity: "accent" });
                 return result < 0 ? -1 /* LessThan */ : result > 0 ? 1 /* GreaterThan */ : 0 /* EqualTo */;
             }
@@ -44687,7 +44692,6 @@ var ts;
 var ts;
 (function (ts) {
     /** The version of the TypeScript compiler release */
-    ts.version = "2.0.9";
     var emptyArray = [];
     function findConfigFile(searchPath, fileExists, configName) {
         if (configName === void 0) { configName = "tsconfig.json"; }
diff --git a/lib/typescriptServices.d.ts b/lib/typescriptServices.d.ts
index 2a99204dffa..ceb50a5d6d5 100644
--- a/lib/typescriptServices.d.ts
+++ b/lib/typescriptServices.d.ts
@@ -1758,6 +1758,10 @@ declare namespace ts {
         _children: Node[];
     }
 }
+declare namespace ts {
+    /** The version of the TypeScript compiler release */
+    const version: string;
+}
 declare namespace ts {
     type FileWatcherCallback = (fileName: string, removed?: boolean) => void;
     type DirectoryWatcherCallback = (fileName: string) => void;
@@ -1897,8 +1901,6 @@ declare namespace ts {
     function resolveModuleName(moduleName: string, containingFile: string, compilerOptions: CompilerOptions, host: ModuleResolutionHost): ResolvedModuleWithFailedLookupLocations;
 }
 declare namespace ts {
-    /** The version of the TypeScript compiler release */
-    const version: string;
     function findConfigFile(searchPath: string, fileExists: (fileName: string) => boolean, configName?: string): string;
     function resolveTripleslashReference(moduleName: string, containingFile: string): string;
     /**
diff --git a/lib/typescriptServices.js b/lib/typescriptServices.js
index 6e73e1ab4da..0bd58928c89 100644
--- a/lib/typescriptServices.js
+++ b/lib/typescriptServices.js
@@ -1004,6 +1004,11 @@ var ts;
 })(ts || (ts = {}));
 /// <reference path="types.ts"/>
 /// <reference path="performance.ts" />
+var ts;
+(function (ts) {
+    /** The version of the TypeScript compiler release */
+    ts.version = "2.0.10";
+})(ts || (ts = {}));
 /* @internal */
 var ts;
 (function (ts) {
@@ -1694,7 +1699,7 @@ var ts;
             return 1 /* GreaterThan */;
         if (ignoreCase) {
             if (ts.collator && String.prototype.localeCompare) {
-                // accent means a ≠ b, a ≠ á, a = A
+                // accent means a ? b, a ? a´, a = A
                 var result = a.localeCompare(b, /*locales*/ undefined, { usage: "sort", sensitivity: "accent" });
                 return result < 0 ? -1 /* LessThan */ : result > 0 ? 1 /* GreaterThan */ : 0 /* EqualTo */;
             }
@@ -44687,7 +44692,6 @@ var ts;
 var ts;
 (function (ts) {
     /** The version of the TypeScript compiler release */
-    ts.version = "2.0.9";
     var emptyArray = [];
     function findConfigFile(searchPath, fileExists, configName) {
         if (configName === void 0) { configName = "tsconfig.json"; }
diff --git a/lib/typingsInstaller.js b/lib/typingsInstaller.js
index 6df9fd24e74..a200ac5367d 100644
--- a/lib/typingsInstaller.js
+++ b/lib/typingsInstaller.js
@@ -128,6 +128,10 @@ var ts;
     })(performance = ts.performance || (ts.performance = {}));
 })(ts || (ts = {}));
 var ts;
+(function (ts) {
+    ts.version = "2.0.10";
+})(ts || (ts = {}));
+var ts;
 (function (ts) {
     var createObject = Object.create;
     ts.collator = typeof Intl === "object" && typeof Intl.Collator === "function" ? new Intl.Collator() : undefined;
@@ -5725,9 +5729,17 @@ var ts;
                 isEnabled: function () { return false; },
                 writeLine: function () { }
             };
-            function typingToFileName(cachePath, packageName, installTypingHost) {
-                var result = ts.resolveModuleName(packageName, ts.combinePaths(cachePath, "index.d.ts"), { moduleResolution: ts.ModuleResolutionKind.NodeJs }, installTypingHost);
-                return result.resolvedModule && result.resolvedModule.resolvedFileName;
+            function typingToFileName(cachePath, packageName, installTypingHost, log) {
+                try {
+                    var result = ts.resolveModuleName(packageName, ts.combinePaths(cachePath, "index.d.ts"), { moduleResolution: ts.ModuleResolutionKind.NodeJs }, installTypingHost);
+                    return result.resolvedModule && result.resolvedModule.resolvedFileName;
+                }
+                catch (e) {
+                    if (log.isEnabled()) {
+                        log.writeLine("Failed to resolve " + packageName + " in folder '" + cachePath + "': " + e.message);
+                    }
+                    return undefined;
+                }
             }
             (function (PackageNameValidationResult) {
                 PackageNameValidationResult[PackageNameValidationResult["Ok"] = 0] = "Ok";
@@ -5853,8 +5865,9 @@ var ts;
                                 if (!packageName) {
                                     continue;
                                 }
-                                var typingFile = typingToFileName(cacheLocation, packageName, this.installTypingHost);
+                                var typingFile = typingToFileName(cacheLocation, packageName, this.installTypingHost, this.log);
                                 if (!typingFile) {
+                                    this.missingTypingsSet[packageName] = true;
                                     continue;
                                 }
                                 var existingTypingFile = this.packageNameToTypingLocation[packageName];
@@ -5885,7 +5898,7 @@ var ts;
                     var result = [];
                     for (var _i = 0, typingsToInstall_1 = typingsToInstall; _i < typingsToInstall_1.length; _i++) {
                         var typing = typingsToInstall_1[_i];
-                        if (this.missingTypingsSet[typing]) {
+                        if (this.missingTypingsSet[typing] || this.packageNameToTypingLocation[typing]) {
                             continue;
                         }
                         var validationResult = validatePackageName(typing);
@@ -5958,7 +5971,8 @@ var ts;
                             _this.sendResponse({
                                 kind: server.EventInstall,
                                 packagesToInstall: scopedTypings,
-                                installSuccess: ok
+                                installSuccess: ok,
+                                typingsInstallerVersion: ts.version
                             });
                         }
                         if (!ok) {
@@ -5972,17 +5986,14 @@ var ts;
                             return;
                         }
                         if (_this.log.isEnabled()) {
-                            _this.log.writeLine("Requested to install typings " + JSON.stringify(scopedTypings) + ", installed typings " + JSON.stringify(scopedTypings));
+                            _this.log.writeLine("Installed typings " + JSON.stringify(scopedTypings));
                         }
                         var installedTypingFiles = [];
-                        for (var _a = 0, scopedTypings_1 = scopedTypings; _a < scopedTypings_1.length; _a++) {
-                            var t = scopedTypings_1[_a];
-                            var packageName = ts.getBaseFileName(t);
-                            if (!packageName) {
-                                continue;
-                            }
-                            var typingFile = typingToFileName(cachePath, packageName, _this.installTypingHost);
+                        for (var _a = 0, filteredTypings_2 = filteredTypings; _a < filteredTypings_2.length; _a++) {
+                            var packageName = filteredTypings_2[_a];
+                            var typingFile = typingToFileName(cachePath, packageName, _this.installTypingHost, _this.log);
                             if (!typingFile) {
+                                _this.missingTypingsSet[packageName] = true;
                                 continue;
                             }
                             if (!_this.packageNameToTypingLocation[packageName]) {
@@ -6121,14 +6132,13 @@ var ts;
                         this.log.writeLine("Process id: " + process.pid);
                     }
                     this.npmPath = getNPMLocation(process.argv[0]);
-                    var execSync;
-                    (_a = require("child_process"), this.exec = _a.exec, execSync = _a.execSync, _a);
+                    (_a = require("child_process"), this.execSync = _a.execSync, _a);
                     this.ensurePackageDirectoryExists(globalTypingsCacheLocation);
                     try {
                         if (this.log.isEnabled()) {
                             this.log.writeLine("Updating " + TypesRegistryPackageName + " npm package...");
                         }
-                        execSync(this.npmPath + " install " + TypesRegistryPackageName, { cwd: globalTypingsCacheLocation, stdio: "ignore" });
+                        this.execSync(this.npmPath + " install " + TypesRegistryPackageName, { cwd: globalTypingsCacheLocation, stdio: "ignore" });
                     }
                     catch (e) {
                         if (this.log.isEnabled()) {
@@ -6160,18 +6170,26 @@ var ts;
                     }
                 };
                 NodeTypingsInstaller.prototype.installWorker = function (requestId, args, cwd, onRequestCompleted) {
-                    var _this = this;
                     if (this.log.isEnabled()) {
                         this.log.writeLine("#" + requestId + " with arguments'" + JSON.stringify(args) + "'.");
                     }
                     var command = this.npmPath + " install " + args.join(" ") + " --save-dev";
                     var start = Date.now();
-                    this.exec(command, { cwd: cwd }, function (err, stdout, stderr) {
-                        if (_this.log.isEnabled()) {
-                            _this.log.writeLine("npm install #" + requestId + " took: " + (Date.now() - start) + " ms" + ts.sys.newLine + "stdout: " + stdout + ts.sys.newLine + "stderr: " + stderr);
-                        }
-                        onRequestCompleted(!err);
-                    });
+                    var stdout;
+                    var stderr;
+                    var hasError = false;
+                    try {
+                        stdout = this.execSync(command, { cwd: cwd });
+                    }
+                    catch (e) {
+                        stdout = e.stdout;
+                        stderr = e.stderr;
+                        hasError = true;
+                    }
+                    if (this.log.isEnabled()) {
+                        this.log.writeLine("npm install #" + requestId + " took: " + (Date.now() - start) + " ms" + ts.sys.newLine + "stdout: " + (stdout && stdout.toString()) + ts.sys.newLine + "stderr: " + (stderr && stderr.toString()));
+                    }
+                    onRequestCompleted(!hasError);
                 };
                 return NodeTypingsInstaller;
             }(typingsInstaller.TypingsInstaller));