Conversion Problem. Help Please!

Hello, I have installed the latest version of DivX software on my Windows 7 PC. I have converted lots of movies before and they worked correctly, but suddenly last movies I have converted just got courrupted. For example: movie is playing on new Philips DVP-3350 (With newest firmware) and suddenly (near to the end) it freezes. The same problem on PC, but here only video freezes,audio is still playing. This happened to most of the movies I have converted. And now it happens (almost) all the time I convert a movie. Tried to reinstall Divx software, but nothing changed.

Please, help me!

PC spec: AMD Athlon 64 X2 4200+, nVidia Geforce 8600 GTS, 2 GB of RAM.

error 87

i am trying to convert an av1 file but after a short I recieve an error 87. how to fix

Rusty