Possible harcoded path

In the file thickbox-compressed.js, there is a variable that defines a path to a image file:

8:var tb_pathToImage = '/sites/all/modules/photos/thickbox/loadingAnimation.gif';

Batch loading of images using the flash utility fails after each file is uploaded, and the registry shows this error for each image:

photos_swfu: Upload path may have been illegally modified
page not found: sites/all/modules/photos/thickbox/loadingAnimation.gif

The module is loaded into its own directory at sites/, using multisite configuration. So the path really is "sites/${custom_site}/modules"

Each image loads but in the end shows the message: "Upload error: 530"