Why would passing a CouchModel through multiple block executions cause EXC_BAD_ACCESS?

[Pulkit Singhal]

Please look at the attached/embedded image above ... I'm trying to access a CouchModel object property called -[LightspeedEntry itemName] but the program breaks with EXC_BAD_ACCESS, even though I can see all these references clear as day. I would ask this Q on CocoaHeads or a forum of that sort but first I wanted to make sure that there isn't some corner case where a CouchModel needs to hold on to its underlying database references and can't be just passed around willy-nilly in blocks as a data model object?

[Pulkit Singhal]

Please forgive me I'm a dumb ass ... EXC_BAD_ACCESS had to do with an error in [NSString stringWithFormat:] that has CouchModel as a value inline and the problem isn't because of the CouchModel itself.