"the input character string has the wrong format" (1 Viewer)

[Spooky]

Server config:

• Win XP SP3
• AMD Athlon X2 4850e
• Gigabyte GA-MA78GM-DS2H
• 4 GB RAM
• TV Server 1.0.2
• FloppyDTV S2

I am suddenly unable to tune to any channel. The TV Server configuration just says "unknown error occurred" and the error.log fills up with

2009-08-28 20:47:51.734375 [10]: Exception   :System.FormatException: Die Eingabezeichenfolge hat das falsche Format.
   bei System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
   bei System.Number.ParseUInt32(String value, NumberStyles options, NumberFormatInfo numfmt)
   bei TvService.TvCardHandler.SetParameters()
   bei TvService.CardTuner.Tune(User& user, IChannel channel, Int32 idChannel)

every time I try. I didn't change anything on the system, though I did switch back and forth between 1.0.2 and 1.1.0 Alpha, but I assume that should have no influence, since the installers rename the older installation folders for backup purposes anyway and thus create a clean installation? Manfred said that I should try to drop the database completely, but I only want to do that if someone can absolutely confirm, that this is caused by some database error (since creating all the groups again etc. and renaming some channels is very tedious).


//edit: I made a full reinstallation (including dropping the database), now the problem does not occur anymore. But it was still very strange.