EXE error!Pls help me

my system:
Athlon 1700+
512mb DDR Ram
Win98 2nd edition

I tried to use Dvd2one to compress a dvd movie in my harddisk
to 1360mb
and everytime the progess is in 41 %, the program will crash
and windows display the ff error message

DVD2ONE111 caused a divide error in module DVD2ONE111.EXE at 01af:00406adf.
Registers:
EAX=fffab488 CS=01af EIP=00406adf EFLGS=00010297
EBX=00000001 SS=01b7 ESP=009cff54 EBP=00000000
ECX=00000000 DS=01b7 ESI=00416b84 FS=4d1f
EDX=ffffffff ES=01b7 EDI=0000003f GS=0000
Bytes at CS:EIP:
f7 f9 89 c1 3b 4c 24 10 7e 0c 89 7c 24 0c 89 4c
Stack dump:
00416890 00000001 00000000 ffffffff 00000000 00000000 81d61b00 0076fb2c 0000000e 00a6500c 000728c0 00406c44 00586772 00586b4c 009cffcc 81d61b00

Could somebody help me out pls!!..
is the compress amount is too small?
cause i want to compress the movie into 1360 mb for which I want to use CD-R to back up the movie

I used smartripper to copy the DVD into my harddrive
at the end there was a error message appear(i forgot the messageā€¦)
so i used powerdvd to play the movie in my HD
the movie is OK but i can not choose any subtitle anymore(if movie is play from DVD, there is subtitle)
is there something wrong from the time i tried to rip the movie into my HD thats why DVD2one can not compress the movie???