ANOTHER Undead patch error!?!?

[plokijjikolp]

Steam.exe (main exception): Win32 StructuredException at 00000000 : Attempt to read from virtual adress 0 without appropriate access rights.
Help.
Now
Please
I got the undead patch from http://www.youtube(dot)com/watch?v=RnBZPYphmF0&feature=related