We have been working with Unity 5.1.1p2 for awhile without issue. Normally after launching the editor Unity will provide notifications, warning, etc when a project is first loaded. After printing this information the console halts and Unity stops printing this information. If we use mono dev, import new assets, etc. Then Unity would evaluate and provide this information again.
We recently moved to Unity 5.1.1p4 and much like p2 the initial notifications, errors, etc in the console after first opening.loading a project. But then the console clears the this information, reloads/re-evaluates. It continues this process indefinitely and working the editor will cause hangs as it process scripts. I tried disabling auto-updating of scripts from Unity’s preferences thinking that may prevent this but no luck.
I have a couple screen shots to help illustrate the issue. The first shows the console starting to print the notifications. The processing icon is displayed in the bottom right. This is the process the it repeats. Also, here is the full list of notifications the console reports right before it clears itself and repeats the process.
As I mentioned Unity 5.1.1p2 this issue did not occur, moving to p4 is when this issue appeared. After moving back to p2 Unity opened the project, printed the notifications once and that was it. I looked on the forum but may have missed a posting with a similar issue. Any input on this would be helpful!