Just a crazy wild guess, but do you have two methods called "module"?
Is there a UDF called "module" in your UDFLibrary that perhaps is
fighting with a method of the same name in your interceptor?
~Brad
Nope, I wondered that too … but, I’ve tested this by creating an obscurely named function - “philstestblahfunction” … and the same error still happens - “Routines cannot be declared more than once”.