Hello,
Could you enable DEBUG_MODE on your site or PM me your FTP access details. I will check the issue on your site and let you know the reason of the problem
Sergey
The error could be easily fixed if you have access to the code. There is a simple instruction of how to fix the issue:
1) Open this file:
ow_plugins/gheader/controllers/header.php
2) Find this string
$pluginfilesDir = OW::getPluginManager()->getPlugin('uheader')->getPluginFilesDir();
3) Replace it with this string:
$pluginfilesDir = OW::getPluginManager()->getPlugin('gheader')->getPluginFilesDir();
Or just replace "uheader" with "gheader" in the whole file with "Find and Replace" operation.
The error is fixed in my developer version of the plugin, but I did some extra changes ( which are not finished yet ) so I can not release an update with this fix only.
Sergey
Could you PM me your site url and FTP access, I will fix the issue on your site. Or you can wait for about 2 weeks until I release an update with the fix.