Hi there,
I have SigPro 3.0.4 bought some time ago, installed but with expired subscription.
I encounter a problem saving settings of SigPro after upgrading to Joomla 3.3.6.
Is there a known issue with the new J3.3?

Here are the errors I get when saving settings:
Notice: Undefined variable: loadData in /www/ispacemedia.com/dora/root/administrator/components/com_sigpro/controllers/settings.php on line 40

Fatal error: Class 'ConfigModelForm' not found in /www/ispacemedia.com/dora/root/administrator/components/com_config/model/component.php on line 20

Thanks for the help!

Hi. Some things have changed in Joomla! API in the recent versions. You need to update Simple Image Gallery Pro to it's latest version ( 3.0.7 currently ). You need an active subscription for this.

Thank you for the prompt reply.
Unfortunately it is a client site built long ago, and it is going to be difficult to convince them that they have to pay one more time for the same plugin.
Can I apply corrections myself?
It means classically that any joomla website should plan a budget for renewing subscriptions for extensions with every update of Joomla!?
Asking so that I correct my project estimates myself.

No, unfortunately, you can't. After all that's the point of the subscriptions.