divX 5.02 encoder windows error

OK
I would like to know if someone can help me regarding divX encoding :

With ANY program, each time i try to encode (VOB to AVI) ANY file, I get a windows error and the encoding process ends immediately .

the configuration is W98 FE P 2 350, encoder 5.02 (official free version)

Thanks

I get a windows error and the encoding process ends immediately

Could you be any more descriptive?