I am running 64 bit, Intel (R) Core (TM) 2 quad CPU, Q99650 @ 3.00GHZ with 8.00 GB ram, it should be enough to deal with xref's and it only happens when I xref my drawings from the same constructs file that were created in autocad MEP 2009. if Autocad wants to send a crash report I let it but I don't know how to find it after it is sent.
Thanks,
Allison