Ok, I just upgraded VMware tools and now the guest wont start.
On startup, windows displays a little dialog box titled "services.exe - Entry Point Not Found" and it displays the message "The procedure entry point _resetstkoflw could not be located in the dynamic link library msvcrt.dll."
Then is displays a similar message titled "lass.exe - Entry Point Not Found" with the same content. Then the screen goes black. I can't use last good configuration to get it to start and safe mode also displays the same message. So I suggest you back up your VM before you try to upgrade the tools. Luckily I had a copy from a week ago that is still intact and so I have not lost much. Bit upset I can't use the latest tools though.