CTD for custom battles,

Love the mod <3 but I'm having some issues with Ctds, specifically,
Whenever I try to set up battles with several regiments in Custom battle I get a ctd. Any idea how to fix this?

What regiments exactly?

It seems the ctds have resolved themselves.. (It happened a few times when I used too many of the skelly sylvanian units), but I am having another issue. Whenever I start a campaign as Sylvania.. about turn five I'm attacked by the high elves and then when they're moving their unit on the campaign map the campaign stops and doesn't progress. The game doesn't freeze, it just stops working.

that is very odd. Unfortunately, I don't know how to fix that