That's because of a bug in FrenzyAI. People have been complaining about another bug where an AI civ will attack you even though you have an alliance with them.
If you want to play SAP without FrenzyAI download the attached file and put it in your ...\Activision\Call To Power 2\ctp2_data\default\gamedata folder.
(It will replace the file that's already there.)
edit: I don't know if the OCC problem you report has anything to do with FrenzyAI.