Problems after version 3.3.7

Hello,

I am using your plugin on few websites. One of them I’m using a PNG overlay for the Facebook feed image. Up to version 3.3.7 everything worked correctly. After updating to 3.3.8, Facebook Debugger no longer fetches the image and shows this message:

“The provided ‘og:image’ properties are not yet available because new images are processed asynchronously. To ensure shares of new URLs include an image, specify ‘og:image:width’ and ‘og:image:height’.”

If I downgrade back to 3.3.7, the image loads normally again with PNG overlay.
I tested version 3.3.9 as well — the same issue appears.

There is also a second problem: I cannot access the plugin settings page anymore. When I click “Settings” from the WordPress Plugins page, I get the error:

“You do not have the necessary rights to access this page.”

At first I thought this might be caused by the downgrade process, but I tested clean upgrades on two other websites (without any rollback), and the same issue occurs — the settings page becomes inaccessible.
On those sites Facebook Debugger works fine, but they do not use PNG overlay, so they are not affected by the first issue.

I hope this information helps you identify the problem. It looks like something introduced after version 3.3.7 affects both image processing and the settings page capabilities.

The page I need help with: [log in to see the link]