If your Carprog V8.21 got this error “CRC32 Check failed” after activation. Please see the error picture shown as below.
Download the file “carprog.vws.zip”
https://mega.nz/#!kVwgURCZ!a0PH9YEgjlqPEzejRHXIFlXVODtmV0lKtJkvCtIrjO0 (No pass)
Replace the initial file “carprog.vws” which is contained in the carprog software folder.
Carprog V8.21 can work again.
Credits to www.obd2shop.co.uk engineer.