Illegal operation when opening

I tried opening Spywareblaster today to check for updates, and I recieved an illegal operation message. Here is the message:

SPYWAREBLASTER caused an invalid page fault in
module <unknown> at 0000:00550294.
Registers:
EAX=00000000 CS=015f EIP=00550294 EFLGS=00010246
EBX=00000000 SS=0167 ESP=0076f3d4 EBP=0076f974
ECX=00000000 DS=0167 ESI=00541bb4 FS=4097
EDX=6600bb50 ES=0167 EDI=011b2cb4 GS=0000
Bytes at CS:EIP:
39 00 2f 00 39 00 2f 00 30 00 33 00 00 00 50 59
Stack dump:
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000


This has just begun to happen, and after repeatedly trying to open the program, I uninstalled it, and then reinstalled it from a new download. I still get this message. I thought maybe a bit of spyware was causing it, soI ran Spy-bot, and Ad-Aware, and both scans came up clean. no viruses present, either. I hope you can help-this product really helps keep my husband's computer clean.

 

BTW, I'm running Win 98, on a Compaq Presario, 433mhz Celeron, 192 mb ram.