Got the UNETWEAVER ERROR after uprading from 5.4.2 to 5.5/5.6 (same error with both versions). Tried to search the forums and found many with same error and some solutions but not any of them worked for me. Only thing I understood from the forums was that it was some bug in MonoDevelop causing it. The weird thing was I'm not using MonoDevelop, I'm using Visual Studio. Well after a lot of struggle trying to find a problem in code and project files I could not find anything causing it. But then I got the idea to try to change to MonoDevelop to see if the same error would come. So I did go to the Preferences and changed to MonoDevelop. Suddenly I could compile the project and the errors was gone! Then I change back to Visual Studio and now everything is working normally?!?! I have no idea why this fixed the problem but it did! So the solution in short: 1) Go to Preferences and change to MonoDevelop. 2) Test compiling/playing the project. 3) Change back to Visual Studio if you want. I hope this helps someone having this vierd error! Sincerly, ZpeedTube