When the conversation with Josephine ends, she summons a deathknight, casts a spell on and then attacks (with Blind and Hell Spikes).
If you can interrupt her summoning, she will not have a chance to cast the spell that appears to be is causing the crash. Flash Attack (if you have it) using a weapon with Frost, or the passive Stun skill may work, or Freeze.
A couple people have had problems in the digital download version with certain spells, but the save worked fine in the CD/DVD version of the game. If you install it from the CDs/DVD again (your first post mentioned having previous saves) to a separate location, you may be able to play long enough to get past the problem, the switch back to the GOG install.
Check your messages (click 'My Stuff' in the top menu bar, then 'My Messages').
