Connector errors on startup (MATLAB R2021b, macOS 12.0.1)

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Todd Hufnagel
Todd Hufnagel on 15 Dec 2021
Commented: Walter Roberson on 7 Jan 2022
Upon startup of a fresh installation of R2021b on macOS 12.0.1, I receive the following error messages:
Error using any
Invalid data type. First argument must be numeric or logical.
Error in contains (line 8)
out = any(strfind(str,pattern));
Error in connector.internal.lifecycle.callLifecycle
Error in connector.internal.lifecycle.callConnectorStarted
Attempting to use MATLAB results in continual errors when even the simplest tasks (such as setting axis limits on a plot) are attempted. Any suggestions on how to resolve this would be appreciated.

Answers (1)

Sivani Pentapati
Sivani Pentapati on 6 Jan 2022
Hi Todd,
These types of issues happen due to path issues and also when the cache is not up to date. You can resolve the error by restoring to the default MATLAB search path and rehash the toolbox cache. Please refer to the below answer for a detailed explanation of the workaround.
  2 Comments
Walter Roberson
Walter Roberson on 7 Jan 2022
isgraphics() is a MATLAB built-in in R2021b. You should not be able to see any code for it. The built-in isgraphics() does not use that code out = ishandle(h) && strcmpi(get(h,'type'),type);
isgraphics() is, if I recall correctly, provided by one of the more common third-party toolboxes... something like SPM; in the toolbox I am thinking of, it (and a couple of others) are provided in a subdirectory intended for compatiability with R2013a and earlier.

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