Trust Fm

I have searched the Forum and found a similar problem to the one i am getting, accept mine is an .avi file....

I get

Access violation at address 005613A0 in module 'Avi2Dvd.exe'. Read of address00000000.

I am getting this a lot recently, then all of a sudden it will work. Then it comes back again, but i have no idea why.

Any help would be great please