One of the 3.5 features lets you specify an array of UDF libraries instead of a simple string. The code in frameworkSuperType seems to be expecting an array for the setting, but that doesn’t quite make sense since the CFCApplicationLoader converts the setting to an array if it is a simple value.
Can you give us any more info such as the value of your UDFLibraryFile setting and whether or not this happens on application startup?
Thanks!
~Brad