Which Lost World romset do I need?

[capgamer]

Hi, I was really excited this morning when I saw a youtube video of this emulator running The Lost World with full sound and pretty good graphics. Seems wonderful, but there's a problem:

I've... acquired 4 Lost World romsets from different websites and none of them have worked!

It always comes up with these error messages:
Error: 'mpr19934.22' (CRC=C7D8E194) is missing from 'lostwsga.zip'.
Error: 'mpr19935.24' (CRC=91C1B618) is missing from 'lostwsga.zip'.
Error: Failed to load ROM set

The worst thing is that these two files ARE included in the zip archives. So... I'm guessing this means these are "old" or "bad" dumps? Of the 4 sites, two of them had a zip archive that totaled 75,276KB and 2 had a zip archive with 75,277KB. Both produce the same error messages.

Anyway, my question is this:
What romset should I be looking for? What is its total file size? I know that you can't provide me with a link, but just knowing what I'm looking for would help.
Alternatively, is this just some random error? Can I somehow bypass it?

Thanks to anyone that can help. Emulator seems great and I'm hoping I can get it work!

[Bart]

Lost World was re-dumped a long time ago. The CRCs of those files need to match what Supermodel reports in the error message. Both files should be 4.0MB (4096KB). Make sure your set matches the latest MAME set and you should be fine. Unfortunately, I cannot tell you where to get the correct dump. It is out there, though.

[capgamer]

At last! I found one that works. Can't figure out how to insert coins yet, but the attract mode is playing right as I'm typing this.

The size of the romset I found was 76.6 MB for anyone else having trouble.