GalleryItem Custom TV Visible and Not Visible

Hi there,
I've followed instructions to set up custom TV using 'galleryitem' and was delighted to see it in action on my resources, however, after saving the first document when returning to edit the galleryitem the information has disappeared - it is visible on front end but I can't go back and change it. I hadn't added text for the watermark and wanted to do so, but the information isn't available to add.

The TV is working on another resource and again showing on front end, but is still accessible on the backend. See images below.

I've cleared cache and checked error log which had this in it:



Images attached to show the resources with the TV working and without.

I'm developing site using Rev 2.2.0 pl2 and Gallery v 1.4.0.

The TV is a great way of making use of gallery images, but not much use if you can't go back and change them!

Suggestions, help?

Anyone? I've been able to add to other resources using the custom gallerytv without problem but there is one resource that does not show the tv in the backend and therefore I can't make any changes...

Ok I have managed to fix this although quite how and why, I'm not entirely sure.

I logged into database and set the value of the tv to:



Cleared my cache a couple of times and this seemed to reset the accessibility of the tv again in the resource. Now all working again.

Not sure what caused the link to tv to be broken but at least its been resolved.