PowerStore + PowerGallery
The suggested fix worked fine. For those of you who want to replicate this fix, here are the details:
** Step 1: Edit Product_Details.php and locate:
document.getElementById("ProductLongDesc").innerHT ML = getFromRSDump(theRet,"ProductLongDesc");
For me, this was in line 398.
** Step 2: Comment out that line so that it looks like this:
//document.getElementById("ProductLongDesc").innerHTML = getFromRSDump(theRet,"ProductLongDesc");
** Step 3: Upload updated Product_Details.php file and it works.