Hello together!

After installing a certificate and now runnig mojoportal successfully with SSL, I've found an issue where I need help.

The file explorer (where I pick images / flash to place in html content) doesn't show any files or folders. Everything else works fine. It is also possible to browse through files and folders in the main filemanager, but not in the file explorer :(

What may it be?

Version is a little bit older (2.3.7.0 MSSQL), but it is not possible to update yet, because there is too much traffic...

Thanks for the help.