[rules-users] Uploading models to Guvnor

Hi All, I am having severe amount of trouble trying to get started in Guvnor, i cannot load any jar files at all - i can upload them but not use them when i try write a guided rule it tells me that no models are loaded even though Guvnor is telling me its there. I create a new package, then upload my jar file, then i add a category and try to save but get the following error: "Unable to validate package configuration (eg, DSLs, models) for [Drols]. Suggestion completions may not operate correctly for graphical editors for this package." I am running out of time plus patience trying to get this to work, i have been following the book: JBoss Drools Business Rules, and the online documentation but to no avail. Any help is much appreciated. Kind regards, James.