CTD´s in all 3 versions, when High Elfs besiege me

HI I have downloaded all 3 versions of this mod
1.4.4
1.4.4 Gigantus version
1.5

It´s actually working most the time fine, but when I play with Dark Elfs and a High Elf army besieges me
I get a CTD allways and in all 3 versions
BUT when they do it, to a small village that has no walls arround it , then it works
When other armys besieg me, its fine
Oh and sometimes when I besiege a BIG Highelf City/Castle, Ctd again...

Did some one else experience this also ?
Would be greatfull for any help