The external tools options page no longer shows an invalid tool error message for a command such as ${SdkToolPath:ILDasm.exe}.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@3129 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Main/Base/Project/Src/Gui/Dialogs/OptionPanels/ExternalToolPanel.cs

@@ -149,11 +149,11 @@ namespace ICSharpCode.SharpDevelop.Gui.OptionPanels
 		{
 			List<ExternalTool> newlist = new List<ExternalTool>();
 			foreach (ExternalTool tool in ((ListBox)ControlDictionary["toolListBox"]).Items) {
-				if (!FileUtility.IsValidPath(tool.Command)) {
+				if (!FileUtility.IsValidPath(StringParser.Parse(tool.Command))) {
 					MessageService.ShowError(String.Format("The command of tool \"{0}\" is invalid.", tool.MenuCommand));
 					return false;
 				}
-				if ((tool.InitialDirectory != "") && (!FileUtility.IsValidPath(tool.InitialDirectory))) {
+				if ((tool.InitialDirectory != String.Empty) && (!FileUtility.IsValidPath(tool.InitialDirectory))) {
 					MessageService.ShowError(String.Format("The working directory of tool \"{0}\" is invalid.", tool.MenuCommand));
 					return false;
 				}