We use a similar configuration without problems, but we will investigate it. Please, give me more details about your system:
- Windows 7 32 or 64 bit ?
- Max Design 2011 32 or 64 bit ?
- What is the latest service pack/hotfix installed in Max ?
Please, try also this:
1) Install RailClone
2) Restart Max until you get the crash
3) Move the file <maxdir>/plugins/RailCloneLite.dlo to another folder, and tell me if the error persists.
Also, would be very useful to get the minidump files that Max generates when crashes (3dsmax_minidump.dmp, dmpuserinfo.xml, and the zip file of them). You can copy them from C:\Users\<username>\Local\Temp before closing the Max error dialog.