Why do I receive 'apitag' warning messages in the Configurations Manager after upgrading to MATLAB Distributed Computing Server 6.0 (R2012a) and changing the MATLABROOT?

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I recently upgraded from an older version of MATLAB to MATLAB 7.14 (R2012a), with MATLAB Distributed Computing Server running on my cluster. I had old configuration settings for my cluster from the previous release, so I started MATLAB and changed the MATLABROOT of my configurations. When I run a profile configuration test in the Configurations Manager, I see many warning messages, and the MATLAB pool test fails.
ERROR: Warning: Variable 'apitag' not found

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 26 Mar 2023
Edited: MathWorks Support Team on 27 Mar 2023
This bug has been fixed in Release 2012b (R2012b). For previous product releases, read below for any possible workarounds:
When upgrading from previous release of MATLAB to R2012a, all existing configurations will be automatically converted to profiles. However, this conversion does not affect submission scripts specified in the profile.
After the upgrade, the profiles will attempt to run the submission scripts from the previous release. As a result, the code you are running is expecting object properties which are different from those existing in the profiles.
Changing the MATLABROOT does not force the new profiles to use new submission scripts.
To work around this issue please use the new submission scripts matching your scheduler. Example submission scripts for MATLAB R2012a can be found at:
Please update your submission scripts to scripts correct for the new version. You can download the cluster installation instructions for MATLAB Distributed Computing Server 6.0 (R2012a) from the following web page:
A bug report has been generated for our development team.

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