Configuration error after update version 9 to 10.0

Hi,
everything seems OK after update, but when I go to OS Services Booking configuration, I get following error:
Call to private method OSBHelper::loadACYMailingLib() from scope HTML_OSappscheduleConfiguration and there is no possibility to edit the configuration. AI tels me to change a bit of code in helper.php: "private static function loadACYMailingLib()"
to "public static function loadACYMailingLib()", is this a good temporary solution or is there going to be un update solving this? ACYmailing is a up to date, fresh install...
Kind regards,
Eric

Hi Eric,
Please download and install OS Services Booking again.
This should include the fix for the issue related to AcyMailing on your site.
After reinstalling it, please check the Configuration page again.
Best regards,
Dam

Thanks, problem solved!
Kind regards,
Eric

You're welcome, Eric