Hi,
2 floating licenses here and none are in use for the moment.
Enscape in Revit 2018 → Works fine
Enscape in Skecthup 2017 → error (see screenshot)
Same computer, enscape V2.4
Hey @archipelago_1 thank you for your post and welcome to our forum! May I kindly ask, is this issue of yours still persisting? 
Should that be the case then we’ll happily troubleshoot the cause behind this problem.