diff --git a/src/vs/platform/keybinding/common/keybindingResolver.ts b/src/vs/platform/keybinding/common/keybindingResolver.ts
index b88d37524e2431ce20b0b5f8d35296b9738d2e6e..d1c777bf7b0a234c9265dc772da1af4526751d84 100644
--- a/src/vs/platform/keybinding/common/keybindingResolver.ts
+++ b/src/vs/platform/keybinding/common/keybindingResolver.ts
@@ -408,11 +408,24 @@ export class IOSupport {
 	}
 
 	public static readKeybindingItem(input: IUserFriendlyKeybinding, index: number): IKeybindingItem {
-		let key = IOSupport.readKeybinding(input.key);
-		let when = IOSupport.readKeybindingWhen(input.when);
+		let key:number = 0;
+		if (typeof input.key === 'string') {
+			key = IOSupport.readKeybinding(input.key);
+		}
+
+		let when:ContextKeyExpr = null;
+		if (typeof input.when === 'string') {
+			when = IOSupport.readKeybindingWhen(input.when);
+		}
+
+		let command:string = null;
+		if (typeof input.command === 'string') {
+			command = input.command;
+		}
+
 		return {
 			keybinding: key,
-			command: input.command,
+			command: command,
 			when: when,
 			weight1: 1000,
 			weight2: index
diff --git a/src/vs/platform/keybinding/test/common/keybindingIO.test.ts b/src/vs/platform/keybinding/test/common/keybindingIO.test.ts
index 1962a7a997e473643fa8366b96c8babe64e2b6d6..d8058e1f9dd9155c3bb32f497a8b1fe19a81c679 100644
--- a/src/vs/platform/keybinding/test/common/keybindingIO.test.ts
+++ b/src/vs/platform/keybinding/test/common/keybindingIO.test.ts
@@ -6,7 +6,8 @@
 
 import * as assert from 'assert';
 import {ISimplifiedPlatform, KeyCode, KeyMod} from 'vs/base/common/keyCodes';
-import {IOSupport} from 'vs/platform/keybinding/common/keybindingResolver';
+import {NormalizedKeybindingItem, IOSupport} from 'vs/platform/keybinding/common/keybindingResolver';
+import {IUserFriendlyKeybinding} from 'vs/platform/keybinding/common/keybinding';
 
 suite('Keybinding IO', () => {
 
@@ -110,4 +111,28 @@ suite('Keybinding IO', () => {
 		testDeserialization(' ctrl-shift-alt-win-A ', ' shift-alt-cmd-Ctrl-A ', ' ctrl-shift-alt-META-A ', KeyMod.CtrlCmd | KeyMod.Shift | KeyMod.Alt | KeyMod.WinCtrl | KeyCode.KEY_A);
 	});
 
-});
\ No newline at end of file
+
+	test('issue #10452 - invalid command', () => {
+		let strJSON = `[{ "key": "ctrl+k ctrl+f", "command": ["firstcommand", "seccondcommand"] }]`;
+		let userKeybinding = <IUserFriendlyKeybinding>JSON.parse(strJSON)[0];
+		let keybindingItem = IOSupport.readKeybindingItem(userKeybinding, 0);
+		let normalizedKeybindingItem = NormalizedKeybindingItem.fromKeybindingItem(keybindingItem, false);
+		assert.equal(normalizedKeybindingItem.command, null);
+	});
+
+	test('issue #10452 - invalid when', () => {
+		let strJSON = `[{ "key": "ctrl+k ctrl+f", "command": "firstcommand", "when": [] }]`;
+		let userKeybinding = <IUserFriendlyKeybinding>JSON.parse(strJSON)[0];
+		let keybindingItem = IOSupport.readKeybindingItem(userKeybinding, 0);
+		let normalizedKeybindingItem = NormalizedKeybindingItem.fromKeybindingItem(keybindingItem, false);
+		assert.equal(normalizedKeybindingItem.when, null);
+	});
+
+	test('issue #10452 - invalid key', () => {
+		let strJSON = `[{ "key": [], "command": "firstcommand" }]`;
+		let userKeybinding = <IUserFriendlyKeybinding>JSON.parse(strJSON)[0];
+		let keybindingItem = IOSupport.readKeybindingItem(userKeybinding, 0);
+		let normalizedKeybindingItem = NormalizedKeybindingItem.fromKeybindingItem(keybindingItem, false);
+		assert.equal(normalizedKeybindingItem.keybinding, 0);
+	});
+});