SAPCAR error when extracting kernel patches

Hi gurus

I am having the following error when extracting so kernel patches:

SAPCAR could not open for writing sapcar.exe <error 28>.The process cannot acces the file becaues it is being used by another process.

Maybe its saying that because sapcar is the on that is extracting this patch an now it cant open it.i have followed not 211077 but still not winning.

on Windows2k3 64bit

Any ideas welcome