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Wrong Data Tree



During the start of the core-service I have an error: wrong data tree:

29.06.2010 13:18:20 Starting Core Server: PRTG Network Monitor Enterprise Edition ID: -1000
29.06.2010 13:18:20 Starting webserver for IP (URL:
29.06.2010 13:18:20 Loading Configuration File: C:\ProgramData\Paessler\PRTG Network Monitor\PRTG Configuration.dat
29.06.2010 13:18:21 Loading Configuration File: Error (Wrong DataTree version. Needed: 4 - found:)
29.06.2010 13:18:21 Could not start webserver: Wrong DataTree version. Needed: 4 - found: ID: -1000
29.06.2010 13:18:21 Core Server will shut down now (running for 1 Sek. since 29.06.2010 13:18:20) ID: -1000
29.06.2010 13:18:21 Stop

What can I do?


core data service tree wrong

Created on Jun 29, 2010 11:21:35 AM

Last change on May 8, 2014 4:04:40 PM by  Gerald Schoch [Paessler Support]

2 Replies

Accepted Answer



Dear Marc,

according to the Core logfile, there is a problem with the configuration file (it may got corrupted).

Please try to exchange your current config file in PRTG's data folder

\Paessler\PRTG Network Monitor\PRTG Configuration.dat

with one from the auto backup folder

\Paessler\PRTG Network Monitor\Configuration Auto-Backups

yesterdays config or the one before and then start the PRTG services.

Best Regards

See Also

Created on Jun 30, 2010 12:18:03 PM by  Torsten Lindner [Paessler Support]

Last change on May 8, 2014 4:03:48 PM by  Gerald Schoch [Paessler Support]



Many thanks, that was the solution

Kindly regards Marc

Created on Jul 1, 2010 7:20:51 AM

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.