Exactly the same problem..
I too am having exactly the same problem!..
Here are details from my post: (Sorry, I've only just found this post!)
Ok I have a feeling that I'm missing something here, and the answer is going to be simple, but I just can't figure out how to get PowerStore to display extra product images using PowerGallery...
I've installed a fresh copy of PowerGallery 110, all seems ok, and (as expected) I am presented with the below info for "Adding To PowerStore":
Add to PowerStore
To add this gallery to a PowerStore product, click the Source button on the Long Description field and paste the following code:
<input type="hidden" name="powergallery" id="1" theme="light" value="/home/mysite/public_html/PowerGallery110/galleries/ribbon_lightbox/index.php" />
Note: For this to work properly, you'll have to update a few PowerStore files. Refer to the Known Issues document in your PowerStore Download Center.
As the instructions suggest simply pasting the code where instructed does not work, as I need to update some powerstore files..
But where are they???..
There is no longer any mention of said integration problems in "PowerStore Download Center" > "Known issues", and I can't find any info anywhere!...