Enter, Esc, Delete key bug

I know this is probably not the first time, certainly not on the Rhino forum, that this has come up, but I cant find a satisfactory reply from anyone at McNeel or even fix for this anywhere.

After baking from Grasshopper, sometimes Rhino simply wont recognise the Esc, Enter and Delete key properly.

Esc and Delete are ignored complete, while hitting Enter shows in the command line as:

Command: _Catalyst
An installation of Dimension Catalyst software cannot be found.

Has anyone ever found out why this is happening. It certainly has something to do with the interplay of Grasshopper and Rhino.

Super annoying bug, and it appears that it has been around for at least 3 1/2 years without a fix or even an explanation. Maybe I just cant find the right thread any more.

@David: Will this get fixed for GH 1.0 and/or Rhino 6?

Here is a discussion on the rhino forum:https://discourse.mcneel.com/t/enter-key-not-recognised-in-rhino-5-...