Adium crashing on launch

[yg17]

Adium is crashing whenever I launch it. It used to work just fine. I'm running 10.4.6 on a dual G5 and the latest version of Adium. Here's the crashlog I got from the crash reporter:

OS Version: Version 10.4.6 (Build 8I127)
Language: en
Exception: NSInvalidArgumentException
Reason: *** -[NSCFArray insertObject:atIndex:]: attempt to insert nil
Stack trace:
1
2 +[NSException raise:format:] (in Foundation)
3
4 -[NSCFArray insertObject:atIndex:] (in Foundation)
5
6 +[NSHost currentHost] (in Foundation)
7
8 -[AWEzvContactManager(Rendezvous) login] (in Bonjour)
9
10 -[AWEzv login] (in Bonjour)
11
12 _objc_msgSendv (in libobjc.A.dylib)
13
14 -[NSInvocation invoke] (in Foundation)

Thanks