Weird OGNL problem?

Hello there,

at the moment, I'm getting the following exception. Can anybody see =
where the null extra argument got from? I'd be grateful for any advice:

Feb 26 01:18:29 CEBOIS[56000] ERROR ognl.webobjects.WOOgnlAssociation  - =
Exception invoking valueInComponent on WOOgnlAssociation with keyPath =
'!sess().currentUserCanEditAuction(auctionItem)'
MissingMethodException: No signature of method: =
app.Session.currentUserCanEditAuction() is applicable for argument =
types: (null, model.DBAuction) values: [null, { ... the auction from =
auctionItem ... }]
Possible solutions: currentUserCanEditAuction(model.DBAuction)
...

Thanks and best,
---
Ondra =C4=8Cada
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