Check out the Bioware forums for sure. At the very top of one of the forums is a "sticky" that should deal with the "invalid pointer operation". It's basically a probably with the desktop shortcut to NWN. The sticky has all the details. Check here:
http://nwn.bioware.com/forums/viewto...&forum=75&sp=0
As for the cracked disc, you should be able to get a replacement by contacting customer support. Once you have that taken care, you will actually use the SOU play disc and not the NWN play disc.
[ 07-30-2003, 08:06 AM: Message edited by: Micah Foehammer ]