I was logged in - also tried to logout/login. But now it works - thanks. I have several reports about "missing license on startup" but I was never able to reproduce it on my computer... Whereever I try to open a file (after startup or directly from double-click on explorer) it loads fine. ...

actually I´m on Trial licence - but I can´t post in ZModeler3 Forumsection. You posted screenshots of the account-page "Personal Info" where you can write down your forum nickname - but I dont have this input field there. I only tried to write that ZModeler3 has big problems with it´s acco...

When encountering an error in account: This Platform ID is already attached to someones ZModeler3 account. you should post here and specify your account name platform ID Each case is researched individually, and if everything is ok, you will get requested platform on specified account. Platform IDs ...