So today I open my map and worked on it for a little bit. I wanted to play test what I did and in the console when I tried to compile it said something like ERROR: couldn't export unnamed.map and some other stuff after. I tried opening it in radiant to remove some of the prefabs I added and literally nothing was in the map. It was just the default skybox with no brushes, volumes or anything. A completely empty map. I went into the the folder where the .map files are located and replaced the main .map file with the .bak it created and the same thing happened when I opened that file, just nothing was there but the default skybox. Does anyone know if there is an option in radiant or something to fix this or if it's gone. I really have no idea what the hell happened if anyone could please explain it to me. If I did lose my map well shit, I was really happy with what I had built so far. I've only been working on it for a few days but was extremely happy with how it was turning out and I already had a lot of detail added as well

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Double Post Merge: October 05, 2016, 12:26:31 am

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I just found a post on modme with the same problem. This post has pictures of the map in radiant and a picture of the error.
http://aviacreations.com/modme/forum/topic.php?tid=191&page=1#lastpost

The same thing happened to me . I was about 6 hours into the build of my map , I had to go for a bit so I saved manually (just to be safe ) then closed out of radiant . When I reloaded black ops 3 mod tools and loaded in my map everything was gone and in the top left corner it said unnamed.map . if anyone knows a solution to this issue a response would be much appreciated.
Thanks

This helped me.

https://ugx-mods.com/forum/index.php/topic,13909.msg143607.html#msg143607