Fonts corrupted in 1.3.1 after running 1.4.1

[xerogravity]

I run KSP on an iMac

I have 1.2, 1.3.1 and 1.4.1 all in separate folders on my hard drive. No Steam, no shared folders

I d/l 1.4.1 not intending to use it as I am in the advanced stages of a career game in 1.3.1 but you know how it is "just a quick look..."?
So, I ran 1.4.1, launched a couple of ships, tried a few mods (mainly EVE, Kerbal Alarm Clock and Kerbal Engineer as they were updated) and then decided to leave it until mods such as Kerbal Joint Reinforcer became current (I always have space stations shake apart on me) :-(

Back to 1.3.1 and my asteroid station around Duna
Argh! All the in-game fonts are distorted, unreadable. The graphic text (Start New Game", Mods & Addons" etc is clean but all the in-game fine text is unreadable.
I tried re-installing with no mods. Still the same. With modes, the mod text is okay. It is just the in-game fine text that fails.

I've tried trashing all the config files I can find, running clean vanilla, nothing works.
I'm not 100% sure that running 1.4.1 caused this as everything is in separate folders. 1.2 works fine, it's just 1.3.1 with my current game (many hours dropped into this one!) that I can't get to wor.

 

Anyone else come across anything similar?

H E L P !
 

 

https://imgur.com/a/t50xb