So I've seen a couple of these topics around here. Instead of spamming I'm just going to post the solution that I used.
I had the following issue:
Inside map editor, I could no longer save my map. After I saved it as a certain name, it only create a meta.xml file inside the folder. If I tried to test the map, it just froze the camera still and time kept passing.
I worked it out this way: I opened up the editor_dump folder (inside resources folder) and took the .map file from there. Copied it to a safe folder and then deleted the editor_dump and editor_test (don't know if that even does anything.. starting a new map might equal the same). Now I had a pure new map. I pressed Save As.. and saved it with a new name. Then I just copied my old .map folder on top of the new one that just got created. Loaded it up and Voila! it worked.
I hope I expressed myself well enough.
REMEMBER! Do backups every once in a while!