If you're not getting any other memory related error messages, then it likely a software problem.
If so, the file causing the error message is part of the ArcGis software on your computer.
I would 1st uninstall, then reinstall the program to see if that fixes the problem.
Quick an easy.
If that doesn't fix it, you're best bet would be to post your problem in the support forums for the software package located here
http://support.esri.com/index.cfm?fa=forums.gateway