[bug] Package failed

For some strange reasons my project suddenly refused to package. I don’t even know when exactly it happened because I package project rarely and usually just use PIE. And in editor everything fine, even if I use play as standalone. I even checked launch and it launched okay, everything is working. But last time I tried to package it and I received failure (both as shipment and development config). Here is the build log:

link text

Well, I was able to fix it although this is very strange. In log you can find this message:

MainFrameActions: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2015.05.11-20.40.37:176][  0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/QuestSystem/Blueprints/DialogueManager.DialogueManager_C:LoadDialogueFragments.CallFunc_GetDataTableRowFromN
MainFrameActions: Packaging (Windows (64-bit)): ame_OutRow'. Unknown structure.

So I just deleted that GetDataTableRowFromName node, restarted editor, added it again, restarted editor. And now everything builds correctly. I don’t know why it happened in the first place though.