There was an error copying the records. Contact the application administrator with the error details below. Error Details: CopyMasterDetail does not allow looping relationships

I created a copy of an app as a "demonstration/test".  In it, I enabled a button to Copy Master & Detail Records.  It worked perfectly in the "demonstration/test" environment, but not in the live app and I'm not sure what I need to look to so that I can correct it.

From what I can tell, all relationships look to be the same.  One thing that was weird was when Choosing a Table in the Copy Master & Detail Records, one table was available in one, but not available in the other.  

I have a table called ACME (parent).  That's related to another table called ACME Registrations (child).  I want to copy an ACME and include all their registrations.  It worked in the test.  When I set it up in the test, the ACME Registrations table was not available to select.  But the button worked perfectly.

When I set it up in the live application, ACME Registrations was an option to select.  The button was still created, but when I hit it, I get the error mentioned in the subject.

Here's the button formula from the one that produces the error:
"javascript:void(copyMasterDetailButtonHandler('&copyFid=6&destrid=0&sourcerid=" & [Record ID#] & "', 'bsixb4euj'))"

Here's the button formula from the one that does not produce an error:
"javascript:void(copyMasterDetailButtonHandler('&copyFid=6&destrid=0&sourcerid=" & [Record ID#] & "', 'bsyeqwhs6'))"

Any help would be greatly appreciated.

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Dominic Rodriguez
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