Bug Can't enter play mode

I've been working on a project and since now i haven't had any problems what so ever bet after manageing some of the UI i can't enter play mode, a loading evnet pops up any it stays there unitil i force quit the editor.



Also this message pops up when i open the project, if i click cancel it lets me open the file but the play mode error still remains.


it sais the proces hasn't acces to the archive because is being used by another proces

 

The first issue (Unity hanging on entering play mode) sounds like an infinite loop in your code.

If you’re using some version control system (if you’re not, you really should), try going back to a previous state of your project and see if it works, then identify what has changed recently that causes these issues.

 

I've gone back to a previous version and in that version i can enter the play mode but i can't find the error in the latest version.
Could it be something to with the input manager? or changing the navigation mode on the ui from automatic to expicit? im so lost. The good part is that the erros when opening the project doesn't appear anymore.

On top of that, i just tried to enter the playmode on a blank new scene and it still pops up the message and so i cant do anything but force quit the editor.

 

well trying and trying, exporting, inporting, and delating files i managed to solve the problem, whitch was the github plugin, i dont know why but it was the problem. Still, thx for the help it actually helped a lot because of the recomendation of the version control system.