FileMaker is complaining

"XML parsing error: Attribute 'xmlns:cm' is not declared for element "FMPXMLRESULT".

But it is declared. I begin my XSLT sheet with

xmlns:cm="urn:schemas-Professional-Plug-in:P2:ClipMetadata:v3.0">

Still, when I prefix any node reference with "cm:" For example,

FMP 8 complains the prefix has not been declared. The XSLT does work in every parser I've tested, including Test=XSLT. It is only FMP that complains.

I've even tried a second declaration here:

0

But FMP refuses to inherit that xmlns:cm declaration, calling it an undeclared attribute.

Any ideas?

Maybe the error means the opposite, maybe it means that FileMaker cannot import elements with the "cm" prefix in the resulting xml. Try this:

Yes, namespaces, though supposedly self-evident, often seem mysterious, until you get it to work -]

That was it! A case of the error message reporting the wrong error. Works like a charm now. Thanks.