Hello I am using monodeveop with unity 4.1.3f3. Before Upgrading to this version of Unity I had no problems whatsoever. Now That I have upgraded Monodevelop gives me this error every time I build my project:
Namespace 'UnityEditor' not found, maybe you forgot to add an assembly reference? (BCE0032)
this error only appear for all Unity Script files in my project. How do I fix this without having to delete all Unity Script files. Thank you.
help.
I’ve got the same issue. Worked great until I upgraded to 4.1.3f3. Now I get this same error. If I delete “Standard Assets (Mobile)” the error goes away but reappears when I reimport that package.
Not sure if it’s related or not, but when I upgraded to 4.1.3f3 and opened my project, Unity would crash whenever I hit play. I went to Assets–>Reimport All. After that it would play in the Unity editor but I still got the BCE0021 error when compiling in Mono Develop.
As a test, I created an empty project in 4.1.3f3. It compiled fine under Mono Develop. I imported Standard Assets (Mobile), then got the same error when recompiling in Mono Develop.
One other thing I noticed. I can’t seem to reproduce this bug when running the same versions of Unity/Mono Develop on my Mac. I don’t know if this is a PC only problem or if it’s due to some other difference in my setup.
Hi together!
I also had these problems and found the solution with this post http://answers.unity3d.com/questions/419565/unity-41-javascript-compile-unityeditor-not-found.html?sort=oldest.
Of course many people want to build and debug in Mono Develop. And it would be fun to have it solved but ce la vie.
I provide a small binary (Windows) which watches and fixes related project files.
https://bitbucket.org/mviranyi/unity-patches/downloads
Hope it helps 
This error didn’t get fixed since at least 2011… nice job! I spend 2 out of 3 days finding workarounds for bugs in unity. I’m so sick of it!