Grasshopper broken after update

Just installed the latest version of Rhino and now every time I start it up I get a stream of popups telling me grasshopper is broken. Is there a fix or is this a bad update. Can I roll back to the last rhino version without the errors

@Richard_Gamester
I had similar problems.
Restarting the computer helped.

got it, cheers. worked for me after the 3rd restart. thanks