The latest update kernel for SuSE 10.1 was compiled with a gcc which wasn't delivered for 10.1.

VMware complains, that the gcc has another version, than the gcc which was used for kernel compilation:

Your kernel was built with "gcc" version "4.1.2", while you are trying to use
"/usr/bin/gcc" version "4.1.0". This configuration is not recommended and
VMware Server may crash if you'll continue. Please try to use exactly same
compiler as one used for building your kernel.

donald:/local # cat /etc/SuSE-release 
SUSE LINUX 10.1 (X86-64)
VERSION = 10.1
donald:/local # cat /proc/version 
Linux version 2.6.16.53-0.8-smp (geeko@buildhost) (gcc version 4.1.2 20070115 (prerelease) (SUSE Linux)) #1 SMP Fri Aug 31 13:07:27 UTC 2007
donald:/local # gcc --version
gcc (GCC) 4.1.0 (SUSE Linux)
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

donald:/local # 

The gcc seems to be the one which is delivered with the current SLES10.
So you should release this one for 10.1 as well, or compile the kernel with the old gcc.