I also have this & validation errors and I think the issue is in the Zen Cart codes. I remember it was also an error in 1.3.9.
How do you report to the admins?
There's a forum section just for this.. post a thread there reporting your findings and the details as to the issue..
My Site - Zen Cart & WordPress integration specialist I don't answer support questions via PM. Post add-on support questions in the support thread. The question & the answer will benefit others with similar issues.
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