Pop Up! Not working on Multi-site

I suspect this is a database issue - but I can't seem to find it.

Running:
WP 3.3.1
Pop Up 3.1

The Pop Up plugin was working fine prior to a Word Press 3.3.0 (and updated to 3.3.1) update.

After the update it just showed a blank white box. Uninstalled - reinstalled - upgraded to newest version - nothing changed.

Changed PO_GLOBAL to true and was able to edit the pop up and it would display. Reset PO_GLOBAL',false - and it will only show global pop up. I can't get it to work site specific.

Suggestions?

Thanks