Ion cannon strikes in final NOD mission

[Urtak]

Hello

I was wondering if anyone else has come across this problem: In the final NOD mission of the original TS campaign my starting units get hit by a rapid succession of ion cannon strikes.

The mission starts normally, with McNeil disabling the firestorm defense. Shortly thereafter however, it just starts raining ion cannon strikes. As soon as one of the ICBM launchers is destroyed, it's game over of course. I tried skipping the mission with the chameleon spy during which you steal the ion cannon launch codes to no avail.

Does anybody else recognize this? I am using v2.03.

Thank you in advance for replying!