Data Error while extracting

[cashtime2013]

I think the problem here is that you don't (not with 7-Zip anyway) see the 2 parts combine when you do the extraction. By following the instructions, you should end up with 2 mod files:

promods-map-v152.scs (102,048 KB)
promods-v152.scs (296,113 KB)

So long as those 2 files plus the promods-def-v152.scs file are in your mod folder, all should be well ...........

[Moh1336]

They won't get any extracted files because of the CRC error.

It's worth noting that I am no longer getting the error now that the holidays are over. Which adds more stock in it being a zippyshare issue during heavy server periods. It's entirely possible that the downloads were finishing incomplete and causing the problem, wouldn't be the first time.

[cashtime2013]

Yes it's always possible you've been getting corrupted / incomplete files. I know it's an issue that crops up quite often. But as you suggest, the kids are back at school now, so less internet traffic