According to http://twitter.com/#!/beatak/status/144815414931755008, #15674 also occurs in 1.4.4.
authorRobert Vehse
Thu, 08 Dec 2011 18:24:48 +0100
changeset 3655 7b4fa56e0504
parent 3654 229b6b0dde50
child 3656 8a7d61bf6e1b
According to http://twitter.com/#!/beatak/status/144815414931755008, #15674 also occurs in 1.4.4.

http://hg.adium.im/adium/rev/5938f683a691: "Ensure that this view object lives beyond the lifetime of its window controller. Fixes #15674."
ChangeLogs/Changes.txt
Frameworks/Adium Framework/Source/DCJoinChatViewController.m
--- a/ChangeLogs/Changes.txt	Mon Dec 05 00:14:06 2011 +0100
+++ b/ChangeLogs/Changes.txt	Thu Dec 08 18:24:48 2011 +0100
@@ -1,5 +1,8 @@
 				Adium Version History
 				-----------------------
+Adium 1.4.5 (X/X/X)
+ * Fixed crash when sending certain group chat requests. (#15674) 
+
 Version 1.4.4 (12/5/2011)
  Services
   * Facebook: Fixed connectivity. (#15544, #15583)
--- a/Frameworks/Adium Framework/Source/DCJoinChatViewController.m	Mon Dec 05 00:14:06 2011 +0100
+++ b/Frameworks/Adium Framework/Source/DCJoinChatViewController.m	Thu Dec 08 18:24:48 2011 +0100
@@ -119,7 +119,7 @@
 			[chat setValue:invitationMessage forProperty:@"InitialInivitationMessage" notify:NotifyNever];
 		}
 		
-		[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(chatDidOpen:) name:Chat_DidOpen object:chat];
+		[[NSNotificationCenter defaultCenter] addObserver:[self retain] selector:@selector(chatDidOpen:) name:Chat_DidOpen object:chat];
 	}
 	
 }
@@ -154,6 +154,7 @@
 	
 	//We are no longer concerned with the opening of this chat.
 	[[NSNotificationCenter defaultCenter] removeObserver:self name:Chat_DidOpen object:chat];
+	[self release];
 }
 
 /*!