Hopefully someone has else has seen this.  I have an assembly with 1 configuration, all parts present and accounted for; When I create a second configuration 1 or more parts become suppressed and can not be unsuppressed.  When placing the cursor over the part in the tree the message "the file for this component could not be located".  I can right click and open the missing part, edit it etc.. but it will not be in the assembly.

I have deleted the parts and re-inserted them into the assembly, but then they dissappear again when the second config is created or only appear in the active configuration....?

I am using SW09 x64 SP2.1 on a corporately hacked xp64 (it is not vanilla xp64 it is a customized image with who knows what done to it)  I am thinking this is a 64 bit problem as a co-worker was able to open the assembly and all parts where found, and worked correctly on his 32 bit box and I have seen a performance decrease since switching to this new box.  (Lots of lag when inserting dimensions, etc)

Help me find a solution!