Mavericks Maps problems

When I try to get Mavericks Maps going I often get this:



It usually happens when I first use Maps.

It goes away and appears normal if I go into the Language & Region pref pane and change the order of languages (even if I don't restart); it usually takes a couple of sequences of opening and closing Maps before it works.

It will also go away if I open another application that makes use of Maps.

It will start if I empty the Maps cache (which might explain why opening/closing needs to be done). I suspected a font issue, but FontExplorer seems to say they're all there. Dunno if it's a graphics card issue; I'm using a GeForce GTX 660.

Any ideas? (Besides to use Google Maps )

 

Thanks, but I tried that and it didn't help.