Playmaker window just don't open[SOLVED]

[uvavoo]

Hi, fairly new to playmaker.
Since update to unity 4.3.1, playmaker editor window refuses to open.
Ie Playmaker/Playmaker editor. Just the Welcome screen appears.
Tried reinstalling Playmaker. No Joy.
Any thoughts guys?

I'm on a MacPro. 

[jeanfabre]

Hi,

 Are you on double screen and switching back and forth between one and two monitor set up?

else, Unity layout is fiddly. Can you double check that you don't have any errors in the console? PlayMaker will not start if there are errors in the project.

bye,

 Jean

[uvavoo]

Thanks for the quick response.
I do have a dual monitor layout. I reset Unity's display to Factory settings and hey presto, the playmaker window appears.
Thanks again.