Unclassified videos missing/library rescan fail

Since Moovida 1.0.5/1.0.6 a whole lot of files that are normally in my Unclassified Videos are simply gone
after a reindex (I messed stuff up and moved it around and ran a rescan). They are not visible in TV Shows nor in Movies, while I assumed that at least files turning out to be videos but not findable in themoviedb or thetvdb would end up in Unclassified but this seems not to be the case.

When running Moovida, I get the following error hundreds of times:
WARN MainThread gst_metadata_slave_process_protocol Aug 17 21:36:48 Traceback (most recent call last):
  File "build/bdist.linux-i686/egg/elisa/plugins/gstreamer/decodebin2_pipeline.py", line 317, in _bus_message_state_changed_cb

  File "build/bdist.linux-i686/egg/elisa/plugins/gstreamer/decodebin2_pipeline.py", line 784, in _done

  File "/usr/lib/python2.5/site-packages/twisted/internet/defer.py", line 243, in callback
    self._startRunCallbacks(result)
  File "/usr/lib/python2.5/site-packages/twisted/internet/defer.py", line 312, in _startRunCallbacks
    self._runCallbacks()
--- <exception caught here> ---
  File "/usr/lib/python2.5/site-packages/twisted/internet/defer.py", line 328, in _runCallbacks
    self.result = callback(self.result, *args, **kw)
  File "/usr/lib/python2.5/site-packages/twisted/protocols/amp.py", line 937, in makeResponseFor
    originalFailure)
twisted.protocols.amp.BadLocalReturn: <bound method GstMetadataSlaveProtocol.get_metadata of <GstMetadataSlaveProtocol None at 0x12aaed0>> returned {'uri': 'file:///home/media/Videos/(Hidden).avi', 'metadata': [{'value': (<twisted.protocols.amp.String object at 0x1302450>, 'video'), 'key': 'file_type'}, {'value': (<twisted.protocols.amp.String object at 0x1302510>, 'video/x-divx'), 'key': 'mime_type'}, {'value': (<twisted.protocols.amp.String object at 0x1302550>, u'UT lol'), 'key': 'artist'}, {'value': (<twisted.protocols.amp.String object at 0x1302590>, 'file:///home/media/Videos/TV Shows/(Hidden).avi'), 'key': 'uri'}]} and <class 'elisa.plugins.gstreamer.amp_protocol.GetMetadata'> could not serialize it Traceback: <type 'exceptions.UnicodeDecodeError'>: 'ascii' codec can't decode byte 0x8c in position 18: ordinal not in range(128)
build/bdist.linux-i686/egg/elisa/plugins/gstreamer/decodebin2_pipeline.py:784:_done
/usr/lib/python2.5/site-packages/twisted/internet/defer.py:243:callback
/usr/lib/python2.5/site-packages/twisted/internet/defer.py:312:_startRunCallbacks
/usr/lib/python2.5/site-packages/twisted/internet/defer.py:328:_runCallbacks
--- <exception caught here> ---
/usr/lib/python2.5/site-packages/twisted/protocols/amp.py:928:makeResponseFor
/usr/lib/python2.5/site-packages/twisted/protocols/amp.py:1421:makeResponse
/usr/lib/python2.5/site-packages/twisted/protocols/amp.py:2227:_objectsToStrings
/usr/lib/python2.5/site-packages/twisted/protocols/amp.py:1133:toBox
/usr/lib/python2.5/site-packages/twisted/protocols/amp.py:1306:toStringProto

(Slave-14 stderr) (elisa/plugins/amp/master.py:71)
WARN MainThread gst_metadata_master Aug 17 21:36:48 no slave running in _next_request (elisa/plugins/gstreamer/amp_master.py:220)
WARN MainThread gst_metadata_master Aug 17 21:36:48 restarting slave (elisa/plugins/gstreamer/amp_master.py:297)
WARN MainThread gst_metadata_slave_process_protocol Aug 17 21:36:48 Traceback (most recent call last):
  File "build/bdist.linux-i686/egg/elisa/plugins/gstreamer/decodebin2_pipeline.py", line 317, in _bus_message_state_changed_cb

  File "build/bdist.linux-i686/egg/elisa/plugins/gstreamer/decodebin2_pipeline.py", line 784, in _done

  File "/usr/lib/python2.5/site-packages/twisted/internet/defer.py", line 243, in callback
    self._startRunCallbacks(result)
  File "/usr/lib/python2.5/site-packages/twisted/internet/defer.py", line 312, in _startRunCallbacks
    self._runCallbacks()
--- <exception caught here> ---
  File "/usr/lib/python2.5/site-packages/twisted/internet/defer.py", line 328, in _runCallbacks
    self.result = callback(self.result, *args, **kw)
  File "/usr/lib/python2.5/site-packages/twisted/protocols/amp.py", line 826, in _safeEmit
    aBox._sendTo(self.boxSender)
  File "/usr/lib/python2.5/site-packages/twisted/protocols/amp.py", line 481, in _sendTo
    proto.sendBox(self)
  File "/usr/lib/python2.5/site-packages/twisted/protocols/amp.py", line 1844, in sendBox
    self.transport.write(box.serialize())
  File "/usr/lib/python2.5/site-packages/twisted/internet/tcp.py", line 420, in write
    abstract.FileDescriptor.write(self, bytes)
  File "/usr/lib/python2.5/site-packages/twisted/internet/abstract.py", line 170, in write
    raise TypeError("Data must not be unicode")
exceptions.TypeError: Data must not be unicode
(Slave-16 stderr) (elisa/plugins/amp/master.py:71)
WARN MainThread gst_metadata_master Aug 17 21:36:48 restarting slave (elisa/plugins/gstreamer/amp_master.py:297)