evreytime i add a new part from the assembly

it always crash the solidworks 2010

but not all file that i edit is the same

problem ,some assembly file is ok

my os is vista64bit and this is the

details of the solidworks before

to restart the solidworks2010

Problem Event Name: APPCRASH

Application Name: sldworks.exe

Application Version: 18.0.0.5035

Application Timestamp: 4ad6bf42

Fault Module Name: pworks.dll

Fault Module Version: 18.0.0.5035

Fault Module Timestamp: 4ad6cf5e

Exception Code: c0000005

Exception Offset: 00000000005adf8b

OS Version: 6.0.6001.2.1.0.256.6

Locale ID: 1033