The one it's hanging up on is the wardrobe icon, which gets displayed right after the mount. That's consistent with the reference to icon_is19.dds in your error message. The mount icon is in a different file, but in the same folder. So it's possible the file access issue is specific only to some of the image files.
Try this: Go to the \UI\Default\images\icons folder and delete icon_is19.dds, then run the EQII patcher and let it re-download the file. Then reopen the utility and see if the wardrobe icon will display.