Cubase 10 quit unexpectedly

system is Mac
2.3 GHz Dual-Core Intel Core i58 8GB 2133 MHz LPDDR3

Hi and welcome on the forum,

It’s hard to guess from the blurred screenshot, but my guess is, GrooveAgent SE crashed. Make sure, you have the latest update installed, please.

You can also share the *.crash file.

So what can I do for reset to the groove agent


First, make sure, you have the latest version installed.

To reset Groove Agent SE preferences (to get the factory settings), delete the preferences folder:
Cubase Preferences folders are:
Mac: ~/Library/Preferences/Groove Agent SE
Win: %appData% Steinberg/Groove Agent SE_64