Bug 55056 [Workbench] would like to establish my workspace (and no longer be prompted)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEApplication.java
IDEWorkbenchMessages
									.getString("IDEApplication.workspaceMandatoryMessage")); 
			return false;
		}
		
		if (instanceLoc.isSet()) {
			
			
			if (!checkValidWorkspace(shell, instanceLoc.getURL()))
				return false;
			
			
			try {
				if (instanceLoc.lock()) {
					writeWorkspaceVersion();
					return true;
				}
			} catch (IOException e) {
				
			}
			MessageDialog
					.openError(
							shell,
							IDEWorkbenchMessages
									.getString("IDEApplication.workspaceCannotBeSetTitle"), 
							IDEWorkbenchMessages
									.getString("IDEApplication.workspaceCannotBeSetMessage")); 
			return false;
		}