LPM not loading

In a fresh install of Opigno 2.4 I get stuck when trying to create a new training witgh Learning Path Manager. In step 2 - "Structure the training" the message "Loading app..." appears and then nothing more happens. We are new to Opigno and has done this setup as a proof of concepts for upcoming development so our over all knowledge of Opigno and Drupal is somewhat limited. Pleas advise. Reagrds