'unknown error' in My TV and Channel Preview (1 Viewer)


Portal Member
December 15, 2007
Please help me. I have been happily watching TV through Mediaportal. After several crashes this afternoon, I now get 'Unknown Error" when trying to watch any channel (DVB or through my STB). When I go into TV Server Configuration and choose 'Preview', I get "Preview Failed:UNknown Error". My EPG is empty and XMLTV appears to be stuck on "tvguide.xml already importing", with 0 channels and 0 programs imported. Not sure if these errors are linked.

Logs attached.

MediaPortal Version: 1.1.0 RC5
MediaPortal Skin:
Windows Version: Windows 7
CPU Type:
Video Card:
Video Card Driver:
Sound Card:
Sound Card AC3:
Sound Card Driver:
1. TV Card:
1. TV Card Type:
1. TV Card Driver:
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec:
MPEG2 Audio Codec:
h.264 Video Codec:
Satelite/CableTV Provider:
HTPC Case:
Power Supply:
TV - HTPC Connection:


Retired Team Member
  • Premium Supporter
  • June 20, 2005
    Italy Italy
    It seems a db corruption problem. Try to delete it and rescan.


    Portal Member
    December 15, 2007
    Fixed it. Found some threads on how to repair MYSQL database, then rebooted and voila!

    Much appreciated robyf.:D


    New Member
    July 24, 2010
    Fixed it. Found some threads on how to repair MYSQL database, then rebooted and voila!

    Much appreciated robyf.:D
    Hi, could you point me to those threads which help you repair the MySQL DB.

    I'm using Win 7 with MySQL and get this "Unknown Error" fairly regularly when I go to TV


    Portal Member
    December 15, 2007




    As I couldn't seem to find any SQL Management Software to help, I went through the following steps (i use MySQL):

    1. Open a Command Prompt
    2. CD C:\Program Files\MySQL\MySQL Server 5.1\bin
    3. mysqlcheck mptvdb --auto-repair -u root -p

    when asked password = "MediaPortal"

    This fixed the database and for me it did not delete any data.

    Good luck.


    Portal Pro
    September 16, 2008
    New Zealand New Zealand
    Gotta loooooove the forums!

    I had this problem today, and within 30mins, had the command line to fix my problem...

    A happy wife is a happy life :)


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