Knowledge Base

Article ID: 885 - Last Modified: January 4, 2012

When I start Maestro, I get a message stating that a valid Maestro license key could not obtained.

FATAL -10: Unable to obtain valid Maestro license key. MAESTRO_MAIN

FATAL got_license: could not check out a license for mmlibs version version
FATAL mmerr_initialize: got_license() failed

What might the problem be?

The -10 in the error message means that the license has expired. If you think that the license should still be valid, check the following:

  • the license file ($SCHRODINGER/license) is readable
  • the license file has a valid license
  • the license file does not contain expired licenses
  • you do not have a license file with expired licenses in the directory from which you start Maestro
  • the date on the machine is the current date (particularly after a machine crash)
  • SCHRODINGER is not set to a directory that has a license file with expired licenses

Keywords: Maestro, license, expired

Related Articles:

#884: Maestro failed to start with the following error message. I have a license, so what can I do to fix this problem?
#1331: Maestro has stopped working. I was able to run it before, but can't now. What can I do?
#484: How do I start a license server on a Windows machine?

Back to Search Results

Was this information helpful?

What can we do to improve this information?

To ask a question or get help, please submit a support ticket or email us at
Knowledge Base Search

Type the words or phrases on which you would like to search, or click here to view a list of all
Knowledge Base articles