Hello,
before continuing, did you upload all the parts of the backup archive? If your backup is pretty large, you'll have several files named .jpa .j01 .j02 etc etc. You have to upload them all.
Did you try to check the option Ignore most errors?
If you still have issues, please open the kickstart file and search for the line with the word KSDEBUG (it should be in the very first lines). Remove the two forward slashes in front of it and try the extraction again. It will fail, but a debug file will be produced. Please zip it and attach it here, so I can review what's going on.
Davide Tampellini
Developer and Support Staff
🇮🇹Italian: native 🇬🇧English: good • 🕐 My time zone is Europe / Rome (UTC +1)
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!