2
This is caused because MastopGo2 uses the PHP4 class construct method(s) instead of using the PHP5 __construct() method. The PHP4 access method was removed in the XoopsFormSelect class in XOOPS 2.5.9. This particular problem can be resolved by replacing line 38 in ./class/formimage.php.
Change from:
$this->XoopsFormSelect($caption, $name, $value);
with:
parent::__construct($caption, $name, $value);