Can not complete task: Your License denies this action.

If you don't have a license purchased from Zmodeler it won't allow it.

If you have the program open more than one time will cause it too

Quote from Marek1130

I have a license its just when I try to import it, it wont work

did you verify your license
first go the the question mark and click it
then go to the license information
copy you license code from the website and then press shift on the license information tab

and the press allow or yes whatever it is then restart zmod

Has your issue been resolved?

I've had this happen to me and simply restarting Zmodeler fixed the issue.