blank patch screens, blank preference screens ?

Bob's icon

I just opened Max 5.1.8 after a few months and my patch screens have no type - also the preference screens in Max are blank.

I have no idea what this is. Could it be the default color has been set to white? And if so, how would I fix it when the prefs are also blank??

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Bob's icon

Also discovered that when I open "fonts" inside Max, the type is set to white. And when I change it to black it reverts to white - as if it's locked...

Any thoughts would be appreciated...

Bob's icon

Fixed. Went to Library / Preferences / and deleted Max 5 Prefs folder. AOK now.