My project cannot open and it says "Failed to open map file. This is most likely because the map was saved with a newer version of the engine."

Development Getting Started & Setup
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1

Hi.

this morning I tried to open my unreal project under 5.3.2, it pops up “Failed to open map file. This is most likely because the map was saved with a newer version of the engine.” However, the project was running last night. Anyone has suggestion to get it back? I checked other relative forum discussion, tried copy the umap from autosave into content folder, however, it doesn’t appear in unreal concet folder, only showed up in the folder explorer.

2

I’m having the same problem. I made a post earlier this week about it and there haven’t been any replies. Luckily, I have an older backup but this is still extremely frustrating.

3

I tried to copy autosave .umap file into the content folder, but it still doesn’t show up…

4

When you say older back up, do you mean the autosave folder (.umap file etc.)?

5

No, I backed up the whole project folder to another drive, all 95GB.