Exception EInvalidPointer in module Ad-Aware2007.exe at 000042D5

Hello,
I am not shore what is the problem. My friend borrowed me his laptop, OS Windows XP. When start up was finished error message showed. This is so confused. On the Internet I try to search the answer but I couldn’t find.
Please help
Thank you
Liz

Application Error
Exception EInvalidPointer in module Ad-Aware2007.exe at 000042D5.
Invalid pointer operation.
OK
