Problem in creating share group

I face a problem in trying to create a share group in an endnote, here I am uploading a window which shows a technical problem when I try to create. Please help on this issue if somebody can solve it.

Greetings imocha,

Sorry to hear about your smart group creation issue!  I can’t see your screenshot, but do you happen to be using EndNote X8 on a Mac running macOS High Sierra?  If so, this is a known issue that our developers are aware of.  For now, after EndNote’s crashes once the smart group is created, I’d recommend relaunching EndNote to see your library with the newly-created smart group.  Please let me know if this works for you.  Once again, I do apologize for any inconvenience caused by this situation.