SavePackage error: "Unexpected custom version"

anonymous_user_586fe6d5 · December 7, 2018, 10:23am

Hi,

I’ve just upgraded several projects from 4.18 to 4.21.

In one of the projects, I’m calling UPackage::SavePackage and I’m getting this error:

LogSavePackage: Error: Unexpected custom version “Dev-Editor” found when saving /Game/Maps/BaseLevel. This usually happens when export tagging and final serialization paths differ. Package will not be saved.

I’ve tried clearing out the cache and intermediate files, re-building, re-saving in editor, but the error is still there.

Could this commit (due for 4.21.2) be related? https://github.com/EpicGames/UnrealEngine/commit/7379c1bee2c043e8873e1e38dc1e347cd3153986

Does anyone have any ideas on what I could try next? Thanks in advance

Shipyards · December 14, 2018, 2:55pm

Bumping this, just encountered the same issue any information would be great.

anonymous_user_c0f0219b · January 2, 2019, 3:39pm

I’ve also hit this problem when upgrading to 4.21. Any update on this?

Fernando_Rabello · January 4, 2019, 4:56pm

Same here: 4.21. The objects for me is related with Niagara.

anonymous_user_d7e24572 · January 13, 2019, 5:10am

Any Resolutions to this issue? Anyone making any headway?

anonymous_user_586fe6d5 · January 14, 2019, 10:01am

Hi FeralBeaver - I’ve not heard anything. I’ve had to downgrade back to 4.18 while I wait for the next point release to see if it fixes this issue.

anonymous_user_d7e24572 · January 14, 2019, 3:52pm

Thanks for the update =)

SantaCop · January 18, 2019, 6:10am

Same here.

Fernando_Rabello · January 18, 2019, 5:25pm

For me its was related with Niagara Assets. I manage to solve selecting the problematic assets and clicking with mouse right button and choosing: “mark dependent compatible assets dirty”. Apparently in this case, the problems is those assets have dependency of some Niagara code which got changed or removed from newer Unreal version and this updates those dependencies. So it fix the problem in my case.