When trying to play a DVD with MP always a dialog pops up with the message "Unable to play DVD, Did you insert a DVD?"

I tried multiple DVD's. DVD's play fine in WMP9 and PowerDVD.
Confirmed by MrMario

This might be related to the solution for issue MP1-70

h4. Additional Information
3-9-2004 18:24:56 -------------------------------------------------------------------------------
3-9-2004 18:24:57 starting
3-9-2004 18:24:57 Load key mapping from keymap.xml
3-9-2004 18:24:57 Init playlist player
3-9-2004 18:24:57 Init players
3-9-2004 18:24:57 done
3-9-2004 18:24:58 load calibration720x576.xml
3-9-2004 18:24:58 language file:language\Dutch\strings.xml is missing entry for id:723 text:Did you insert a DVD?
3-9-2004 18:24:58 language file:language\Dutch\strings.xml is missing entry for id:722 text:Unable to play DVD
3-9-2004 18:24:58 Load fonts from skin\crystalcenter\fonts.xml
3-9-2004 18:24:58 fonts.InitializeDeviceObjects()
3-9-2004 18:24:58 Load skin crystalcenter
3-9-2004 18:24:58 Find window plugins
3-9-2004 18:24:58 original skin size:720x576
3-9-2004 18:24:59 open tvdatabase
3-9-2004 18:25:00 initialize skin
3-9-2004 18:25:01 load calibration720x576.xml
3-9-2004 18:25:03 skin initalized
3-9-2004 18:25:03 DX9 size: 720x576
3-9-2004 18:25:03 video ram left:370688 KByte
3-9-2004 18:25:03 Start MediaPortal
3-9-2004 18:25:03 Recorder: no capture cards found. Use file->setup to setup tvcapture!
3-9-2004 18:26:37 app.Reset()
3-9-2004 18:26:37 OnDeviceReset()
3-9-2004 18:26:37 load calibration720x576.xml
3-9-2004 18:26:37 Load fonts from skin\crystalcenter\fonts.xml
3-9-2004 18:26:37 fonts.InitializeDeviceObjects()
3-9-2004 18:26:38 load calibration720x576.xml
3-9-2004 18:26:38 done
3-9-2004 18:26:38 language file:language\Dutch\strings.xml is missing entry for id:723 text:Did you insert a DVD?
3-9-2004 18:26:38 language file:language\Dutch\strings.xml is missing entry for id:722 text:Unable to play DVD
3-9-2004 18:26:38 Load fonts from skin\crystalcenter\fonts.xml
3-9-2004 18:26:38 fonts.InitializeDeviceObjects()
3-9-2004 18:26:38 Load skin crystalcenter
3-9-2004 18:26:38 Find window plugins
3-9-2004 18:26:39 original skin size:720x576
3-9-2004 18:26:40 initialize skin
3-9-2004 18:26:40 load calibration720x576.xml
3-9-2004 18:26:40 skin initalized
3-9-2004 18:26:40 DX9 size: 720x576
3-9-2004 18:26:40 video ram left:371712 KByte
3-9-2004 18:27:28 media inserted in drive X
3-9-2004 18:27:28 DVD inserted into drive X:
3-9-2004 18:27:35 DVDPlayer:cleanup DShow graph
3-9-2004 18:27:37 DVDPlayer:Unable to start playing()
3-9-2004 18:27:37 DVDPlayer:cleanup DShow graph
3-9-2004 18:27:39 dvdplayer:failed to play
3-9-2004 18:27:39 DVDPlayer:cleanup DShow graph
3-9-2004 18:27:39 dvdplayer:bla
3-9-2004 18:27:40 dvdplayer:sendmsg
3-9-2004 18:28:01 DVDPlayer:cleanup DShow graph
3-9-2004 18:28:07 DVDPlayer:Unable to start playing()
3-9-2004 18:28:07 DVDPlayer:cleanup DShow graph
3-9-2004 18:28:10 dvdplayer:failed to play
3-9-2004 18:28:10 DVDPlayer:cleanup DShow graph
3-9-2004 18:28:10 dvdplayer:bla
3-9-2004 18:28:10 dvdplayer:sendmsg
3-9-2004 18:28:18 MediaPortal done