[Pharo-project] FFI not loading on squeak-dev 496

Hi, I'm trying to load FFI on a squeak-dev image (496 09.11.04) and I'm having a DNU here: externalFunctionDeclaration "Parse the function declaration for a call to an external library." | descriptorClass callType retType externalName args argType module fn | descriptorClass := Smalltalk at: #ExternalFunction ifAbsent:[nil]. descriptorClass == nil ifTrue:[^false]. callType := descriptorClass callingConventionFor: here. ------------------------------------------------------------ ^HERE Does anybody knows what happens? Cheers, Esteban