Campaign file wont open, END Header Not Found

[YaGoiRoot]

Hello all, I've run into an issue recently with my campaign file. When I try to open it, I get met with the following error message:

Could not load campaign.
java.util.concurrent.ExecutionException: java.util.zip.ZipException: zip END header not found

I have several recent saves of the campign file, as well as the saves in the backup maptool folder, and they all seem to have this issue.

Searching the forum, I can see there are a couple other posts describing this same issue. The fixes in those cases were to change the campaign file to a ZIP file and try to open it that way or repair the file. I have tried to do so with several different zip repair applications: WinRAR,
Repairit ZIP Repair, and Diskinternal ZIP Repair. They all give an empty output.

I'm at a bit of a loss on what to do now; besides, just try more repair tools. If anyone has any suggestions on how to proceed or any recommendations for repair tools that might work, I would be very grateful.

[aliasmask]

Outside of zip repair, there isn't much to be done. If you have several files like that, then that hints at your system or method is corrupting the files. I would be cautious on relying on the autosave. I think the default time is like 5 minutes, which, imo is too short. I set mine for 60 minutes. When closing the campaign, don't rely on the reminder save. You cancel the reminder, do a manual save and then close. I do think the autosave and reminder save could corrupt if done at the same time, which is another reason why to set autosave to a longer time interval. I just don't rely on either. I also keep a running save each week, dating the file rather that rewritting older saves. Space is cheap.

[YaGoiRoot]

Outside of zip repair, there isn't much to be done. If you have several files like that, then that hints at your system or method is corrupting the files. I would be cautious on relying on the autosave. I think the default time is like 5 minutes, which, imo is too short. I set mine for 60 minutes. When closing the campaign, don't rely on the reminder save. You cancel the reminder, do a manual save and then close. I do think the autosave and reminder save could corrupt if done at the same time, which is another reason why to set autosave to a longer time interval. I just don't rely on either. I also keep a running save each week, dating the file rather that rewritting older saves. Space is cheap.

Thank you for the advice. I think that I'm probably just out of luck in regards to recovering this campaign file. I don't suppose you have any recovery tools that you'd recommend?

[aliasmask]

I've had previous had luck with WnRar recovery but recently wasn't able to help someone else recover a file with it. So, you may get lucky, but I wouldn't count on it.