Quote Originally Posted by JNR345 View Post
Also, interestingly, when I click the edit button for one of these new items and simply click Save (without changing any of the fields at all), then the new image suddenly shows perfectly for that product. What does that mean?
This appears to be more of an indication that it is not specifically EP4 that is causing a problem as an interaction with something else or a template issue. There are a number of things that could be going on. The product type may be wrong in the uploaded file invoking the wrong template type to show the product (though still not sure how the image was affected because no link has been provided to your problem area or where something shows correctly), and that by editing and saving (without changes) may rectify something. The file that you are uploading may be missing something that is needed (again no specific data provided), you may have some sort of old/incorrectly uploaded files (state that running 1.5.1; however, was there an upgrade? Are there files that remain that possibly shouldn't do any of the replaced files end with .php instead of .old or some other extension...) Etc... I can't say that I have seen anyone else express this problem, so there is something about your store/use of EP4 that is causing this, unfortunately.

On another note, if you were to upload a new EP4 product, then do the edit/save that you described then download the same detailed EP4 file and compare the row of data associated with the new product, what differences are there if any?