Warning at Simulink starting

Hi,

Following the installation of R2024a, warnings appear the first time I open a Simulink model:

Warning: Invalid Icon ID for action: up 
Warning: Invalid Icon ID for action: forward 
Warning: Invalid Icon ID for action: back 
Warning: Invalid Icon ID for action: back 
Warning: Invalid Icon ID for action: up 
Warning: Invalid Icon ID for action: forward 
Warning: Invalid Icon ID for action: keyboardShortcuts 
Warning: Invalid Icon ID for action: keyboardShortcuts 
Warning: Invalid Icon ID for action: forward 
In isSimscapeLicensed
In simulink.toolstrip.internal.loadConfig
In simulink.toolstrip.internal.refreshConfig 
Warning: Invalid Icon ID for action: back 
In isSimscapeLicensed
In simulink.toolstrip.internal.loadConfig
In simulink.toolstrip.internal.refreshConfig 
Warning: Invalid Icon ID for action: up 
In isSimscapeLicensed
In simulink.toolstrip.internal.loadConfig

and so on...

Until I write "dbquit", the command window is in dubbuging mode, and only a "dbquit" command solve the issue.

How can I get rid of these warnings?

Regards

Answer 1

[Raj]

Hi @Jean Matthieu,

The warning you are experiencing may be the result of corrupt preferences files.

As a first step, try to do a fresh installation MATLAB R2024a and see if this fixes the issue.The following documentation explains the same in detail-

https://www.mathworks.com/matlabcentral/answers/131519-how-do-i-perform-a-clean-installation-of-matlab

If reinstalling doesn't solve the issue. try the following troubleshooting steps, in which you regenerate the MATLAB preferences files:

• Execute the following in MATLAB Command Window to change the current working directory to the "Preferences Directory":

>> cd(prefdir)

• Make a copy/backup of the folders and files in that directory to a new directory with the name, for example, "R2024a_old".
• Delete all the folders and files inside the directory returned when executing the command in step 1. Ensure that the "Preferences Directory" is now completely empty.
• Restart MATLAB. MATLAB will recreate preferences files in the now empty "Preferences Directory".

If this does not address the issue and prevents the warning from appearing, it is possible to restore your preferences by deleting the newly created folders and files in the "Preferences Directory" and restoring the backed-up folders and files from the "R2024a_old" folder.

I hope this helps resolving the issue you are facing.