Dynamo Player error - graphs won't run

[Alien]

Any idea what this is and how to get rid of it?

[jacob.small]

Restart the CPU as a first step. If not, you may have a conflicting add-in that breaks the ability of Player to parse .dyn files or start Dynamo. My gut says PyRevit.

[Alien]

I turned it off and on again and it seems happier.