Hello,
this sounds strange...
Is there any other error message within the Log Window? Event though it is the free version, you should be able to open the project.
What do you mean with "freezing" - is the Composer just empty or is the entire Embedded Wizard Studio blocked?
If there is no message - is it possible to send your project to support@embedded-wizard.de then we can investigate that.
Best regards,
Manfred.