RUI File Error

I just got this error after opening Rhino V6…

Afterwards Rhino looks like this:

Any idea on what’s going on or how to fix this?

For the developers FWIW:
Last week I got an error that the MRU toolbar could not be written to. I attributed it to closing 2 instances in close succession. It might be unrelated to this, but maybe it’s a clue. I did not report it because I was working on a time critical project.


Hi Siemen,

If Im not mistaken, As a fix you can run the command ToolbarReset.


Thanks Willem,
That indeed did the trick.

I get this as well - it is on the heap…


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RH-37752 is fixed in the latest WIP