How can I stop getting a blue screen and BAD_POOL_CALLER when I use PSP7?

I have a Laptop, running XP Home. When I try to rotate pictures in Paint Shop Pro 7 I get a blue screen and the message BAD_POOL_CALLER with some STOP: 0xC2 codes, how can I stop this happening?
Simon, December 2003


done
It appears that you have a bad stick of RAM. Read this page here:
http://kindel.com/blogs/charlie/archive/2004/05/26/282.aspx

...muck, May 2006