Help me understand this Fatal error: Call to undefined function EntityDefaultMetadataController::bundleOptionsList()
The static method EntityDefaultMetadataController::bundleOptionsList() is a part of Entity API module that VBO is dependant upon. One of your modifiable entity properties needs this method to retrieve options for the modify operation. 

You need to debug why this method isn't available. It's defined in entity.info.inc and should be included if the Entity API module is enabled.