Thumbnailhover mode loads field content as blank

I have checked the fields for "Node Title" and "Image" in the "Main Frame" and a second "Image" (for thumbnail) in the Breakout. Even with these settings in place, the markup in Thumbnailhover mode is empty of content whereas in SingleFrame mode it is not.

The only thing that shows when I switch to 'Thumbnailhover' mode are field labels (if I don't leave them blank) and slideshow controls (prev,pause,next) and page numbers. Interestingly, there are 3 slides corresponding to the 3 items that should be showing, and per the pager they are rotating through. But there is nothing displayed, and nothing in the actual markup (relating to field contents). Again, this all works fine in normal 'SingleFrame' mode (with and without the pager set to thumbnail).

I'm at a bit of a loss as to why this would work in SingleFrame mode but not in Thumbnailhover.

After some debugging, it would seem the following expression is causing the issue:

$rendered_fields .= $view->style_plugin->rendered_fields[$count][$field];

This expression is returning a NULL value when it should be returning the field content and adding it to the markup. I am not (yet) familiar enough with the view object / views api to understand why. Any thoughts?

The values present in $field are 'field_product_images_fid' and 'field_product_images_fid_1' -- these are CCK Image Fields. The values for $count cycle from 0 through 2. There are three items in my view so that makes sense. I should probably also mention that my Images field allows multiple values, but that the view is set to 'group' the values and only select the first value (delta 0).

It does not appear that $view->style_plugin->rendered_fields nor $view->style_plugin exist (isset returns FALSE on both counts). I'm running Views v2.6.

Unfortunately I cannot provide a link to the site at the moment. But I can tell you that the markup includes the basic wrappers for the module, but does not include the field content -- which makes sense given the null value returned. I took a look at the SingleFrame theme file and I can see that the field content is retrieved in an entirely different way for this mode.

After some digging, I found this thread #389428: row field variable names not created properly where merlinofchaos points out that the best practice to reference $view object field data by field name and row is: $view->render_field($field, $count)

There are two instances in the Thumbnailhover theme file where this replacement would be made. After replacing "$view->style_plugin->rendered_fields[$count][$field]" with "$view->render_field($field, $count)", my issue was fixed and my field content is now displayed.

I'm currently running Views v2.6

I've now been running Views Slideshow with Thumbnailhover mode enabled without issue for about a week now using the modifications I noted above.