Unity Lock Up and Mouse Clicking Issue

Posted this in the support forum, but figured I'd try here too.

Sorry if this has come up before, but I've run into a rather frustrating issue. I've tried researching for solutions, but either I'm not seeing them or not trying hard enough - either way I figured I'd get a conversation going here about it.

If I run a scene(play button) and there is an error in the scene (bad script, null reference, etc...) 2 things will happen: 1) Unity locks up with both the play and pause button looking like their pressed. I can not click on them to stop, the only things that work are closing the app or ctrl+p 2) After stopping the scene (ctrl+p) the editor has issues with my mouse inputs - essentially when I click, it thinks I'm clicking a few pixels above. So it just ends up selecting the field above where I clicked. Now the funny thing is, if I drag something somewhere it works find (no offset).

Compare this to a scene with no errors - and neither of the above occur.

For the record, I'm currently running on a Win7 64 bit system (I have fixed the missing critical service pack file issue). And just using the default in tool play - not yet building to a platform.

Any solutions would be greatly appreciated.

In case anyone else has this issue. 1 of things fixed it - sorry, I can't be more detailed.

1) I did all of my windows updates and rebooted the machine as per the updates

2) After an update I realized I had only been working with converted old projects (tutorials) so I made a new project/scene and put errors in it and it worked fine. I loaded the saved versions of conversions and now they suddenly work fine.