Error creation Model devart sqlite DevartEfGenerator

I'm trying the Devart Sqlite , but I have a problem . The error is the following :

Custom tool 'DevartEfGenerator' failed

It occurs only when I fill out the designer , if I leave me empty generates the necessary code , but obviously empty is unusable . If I drag a table at a time from tabase , it works but can not find the table columns the entity framework. can someone give me an idea on how to solve ?

Thank You