"Unable to open pushover data!" Help..

[rkylefenton]

Hi I was working away on a model, and all of a sudden whenever I select an item in the "Define" menu I get a popup window that says "Unable to open pushover data!"

I have never used sap2000's pushover analysis, and was not doing anything out of the ordinary when this happened.

I can't find anything about it on the internet. I have tried CSIs clean install guidelines and it still will not work.... Any ideas here??

Thanks