Error Reading blist.xml on Windows

Hello
I have been getting the following error message with Pidgin software.
Whenever I am trying to retrieve my buddy list I get an error message
Error Reading blist.xml
An error was encountered reading your buddy list. They have not been loaded, and the old file has been renamed to /home/Kaplan/.purple/blist.xml~.
I tried doing a research in net and found that there could be some random characters which is included in the .xml file.
So I modified the .xml file and removed the random characters according to the instructions and it was working fine.
But now when I rebooted the machine the error message pops up again.
Any ideas of how to rectify this error message?
