Error while trying to validate a ticket

Hello! First of all, thank you for developing this plugin: it is very useful and works well!

Anyway, I have a problem: everytime I try to validate a ticket by inserting its ID into the appropriate field, the page starts loading indefinitely. I discovered that the GET to admin-ajax.php returns 500 saying that WordPress encountered a critical error.

The error comes from the file stageshowlib_dbase_base.php, line 90, in function SessionVarsAvailable(), because $this->IsSessionElemSet() is not defined.

At the moment I solved the issue by replacing the whole function body with “return true”.

I think this may be a bug so I wanted to report it to your attention.

Thank you,

Giorgio