[Rubycocoa-talk] Don't understand what I did wrong

[Pierce T. W. I. <pi...@tw...>]

The code:

    
@storeMetaDeta 
=NSPersistentStore.metadataForPersistentStoreWithURL_error(url,error)

The error:

2008-02-29 10:36:04.750 Frictionless[48280:813]  
AppDelegate#openAllWindows: OSX::OCException:  
NSInvalidArgumentException - *** - 
metadataForPersistentStoreWithURL:error: cannot be sent to an abstract  
object of class NSPersistentStore: Create a concrete instance!