Unity Error : Mounting archive file system for lightmap snapshot failed!

Hey folks,

in all the scenes our design guy baked in lighting I get the error “Mounting archive file system for lightmap snapshot failed!”

He did it at his place, everything was working, he pushed everything to GIT, I pulled it, now I am getting the error.

There is a directory per scene which contains lightmap data e.g. folder structure





… and so on.

So the data is there, Unity just can’t seem to make anything out of it.

Anybody knows something about this? Google is of no help.




I just solved this problem on my system. You have to have the full I/O control on your project files. You have to place your projects somewhere in your file system, where you have the full access.

I just ran Unity as an administrator.

I just update my unity to 5.3.4