ApplicationException: Unable to find a suitable compiler? Rebuild only temporary solution.

As already asked on this forum, sometimes, some people, including me and the team that I am working on are getting this ApplicationException. ReImporting does "Solve" the problem for a few minutes. But it is never really gone. What I want to know is how does this error in unity slip in my application, what causes it? And maybe more importantly how do I really solve this/make sure that it does not happen again in my future projects?

My assumptions on this case:

• Does it have to do with mac/windows versions? (some people in my team have macs but most use windows)

• Could it have to do with SVN subversion system?

• Are there some missing files not being uploaded/created for the peoples in my team?

• What does Reimporting actually do exactly do? why does it "Solve" the problem temporary?

link to question previously being asked:

http://answers.unity3d.com/questions/412339/applicationexception-unable-to-find-a-suitable-com.html