BS, WMP, ... don't play .avi anymore?!?

[grooveguy]

Hi everybody,

I've got the following, very big problem.
Today, I downloaded the 3rd episode of season 3 of LOST.
And since that moment, the troubles began.
When the download was finished, I tried to play the video, but I recieved an error, and my Windows Explorer shot down too.
I tried to open the .avi with WMP, and other problems, but they also can't play .avi anymore!
I restarted my PC, I even did a system repair, but the problem is still there..
What can I do??

The error report from BS says:

BSplayer v2.00.937, Unhandled exception at EIP: 00000000
If you click 'Close' application will be terminated.
Please report this info to the author with description what were you doing.
If you have internet connection, it's recommended to send error report, this will help us solve problems faster.
Access violation at address 00000000. Read of address 00000000
EAccessViolation
Call stack: 00000000,00404843

I have Windows XP Professional.

I hope there's anyone who can help me, cause it's very sad when you can't play .avi anymore... :(

Thank you guys..