Invalid Page Fault...

My copy of Exel 97 had been working perfectly for years
when suddenly I started receiving the following error
message:

EXCEL caused an invalid page fault in
module VBA332.DLL at 0177:651b5a03.
Registers:
EAX=7fffffff CS=0177 EIP=651b5a03 EFLGS=00010202
EBX=00000001 SS=017f ESP=0062d33c EBP=0062d7c8
ECX=0043615d DS=017f ESI=7fffffff FS=1187
EDX=00000000 ES=017f EDI=0044fea0 GS=0000
Bytes at CS:EIP:
01 3b c3 b8 00 00 00 00 83 d0 ff 23 c1 ff 75 d0
Stack dump:
0044fe86 0062db5c 0044fe8f 00000000 00000000 00000000
0062d358 00000000 0062d360 00000000 0062d368 00000000
0062d370 00000000 0062d378 00000000

The program must be closed at that point. If I open it
with a shift-click I get it started but still with error
messages about add ins not being loaded. I reinstalled
the software but that did not fix anything.

Any suggestions will be greatly appreciated.