MZCommerceJPurpleSoftware error for our app

Within iTunes, our users are searching and finding our app, then attempting to download (previously purchased), and are seeing the error message:


"MZCommerceJPurpleSoftware#40510 9185 is not compaitible with this device."


What is this? And what do we need to do to fix it?

MZCommerceJPurpleSoftware error for our app
 
 
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