Monster manual drop not working

I dragged and dropped a monster (minotaur) from the monster manual into the map. It loaded a while, so I interrupted the action. Then I dropped the minotaur again and now I get an empty token with no stats etc... In the options it is linked to the minotaur, though. I reproduced the error with goblins. I tried reloading the map and using the minotaur and goblin on other maps but it doesnt import those monsters properly anymore (other monsters are fine). How do I fix this?

You'll most likely need to remove them from your journal After that drag them from the compendium again - this time waiting long enough for the sheet to fully load before closing it - and you should hopefully get creatures that work better this time.

Thanks for helping out a newbie at roll20 Sean! It worked the way you described. :D