Copy/Move contains a document library with a folder named "images" and import fails with the following message:
FatalError: The given key was not present in the dictionary.
at System.ThrowHelper.ThrowKeyNotFoundException()
at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
If the source document library contains a folder titled "images", the SharePoint API can get confused with the system images directory in the 12/14 hive.
Change the "images" folder to something else.
