Access Violation – While processing graphics data….

Dear Friends,
My Adobe Photoshop encounters following errors while loading a plug-in on the shadow effect.
It does not happens every time, rather it appears time to time. How can I solve it?
It is important to me because I am heavily dependent on the plug-in for my current project.

Access Violation
While processing graphics data an exception occurred you may need to restart the emulator
Thanks,
Jessica
