After updating R2020a update 3, a warning pop up

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Ka Ming Cheng
Ka Ming Cheng 2020-6-17
回答： Rishabh Anand 2021-1-13
After I updated my R2020a update 2 to update 3, a warning "Unrecognized function or variable 'matlab.internal.addons.updates.fileexchangeaddon.getTypeFromPackageInfoUrl'."
Please help me how to solve it.
Thanks.
  5 个评论
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Micke Malmström
Micke Malmström 2020-6-18
after 3 reeboots of the Matlab-app the error msg disapeared for me...
Ka Ming Cheng
Ka Ming Cheng 2020-6-19
Here is the my MATLAB version and installed toolboxes.
% >> ver
% -----------------------------------------------------------------------------------------------------
% MATLAB Version: 9.8.0.1396136 (R2020a) Update 3
% MATLAB License Number: STUDENT
% Operating System: Microsoft Windows 10 Home Version 10.0 (Build 18363)
% Java Version: Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
% -----------------------------------------------------------------------------------------------------
% MATLAB Version 9.8 (R2020a)
% Simulink Version 10.1 (R2020a)
% Aerospace Toolbox Version 3.3 (R2020a)
% Antenna Toolbox Version 4.2 (R2020a)
% Audio Toolbox Version 2.2 (R2020a)
% Communications Toolbox Version 7.3 (R2020a)
% Computer Vision Toolbox Version 9.2 (R2020a)
% Control System Toolbox Version 10.8 (R2020a)
% Curve Fitting Toolbox Version 3.5.11 (R2020a)
% DSP System Toolbox Version 9.10 (R2020a)
% Data Acquisition Toolbox Version 4.1 (R2020a)
% Database Toolbox Version 9.2.1 (R2020a)
% Deep Learning Toolbox Version 14.0 (R2020a)
% Econometrics Toolbox Version 5.4 (R2020a)
% Financial Toolbox Version 5.15 (R2020a)
% Fuzzy Logic Toolbox Version 2.7 (R2020a)
% Global Optimization Toolbox Version 4.3 (R2020a)
% Image Acquisition Toolbox Version 6.2 (R2020a)
% Image Processing Toolbox Version 11.1 (R2020a)
% Instrument Control Toolbox Version 4.2 (R2020a)
% MATLAB Coder Version 5.0 (R2020a)
% Mapping Toolbox Version 4.10 (R2020a)
% Model Predictive Control Toolbox Version 6.4 (R2020a)
% Navigation Toolbox Version 1.1 (R2020a)
% Optimization Toolbox Version 8.5 (R2020a)
% Parallel Computing Toolbox Version 7.2 (R2020a)
% Partial Differential Equation Toolbox Version 3.4 (R2020a)
% RF Toolbox Version 3.8 (R2020a)
% ROS Toolbox Version 1.1 (R2020a)
% Reinforcement Learning Toolbox Version 1.2 (R2020a)
% Robotics System Toolbox Version 3.1 (R2020a)
% Robust Control Toolbox Version 6.8 (R2020a)
% Sensor Fusion and Tracking Toolbox Version 1.3 (R2020a)
% Signal Processing Toolbox Version 8.4 (R2020a)
% Simscape Version 4.8 (R2020a)
% Simscape Driveline Version 3.1 (R2020a)
% Simscape Electrical Version 7.3 (R2020a)
% Simscape Fluids Version 3.0 (R2020a)
% Simscape Multibody Version 7.1 (R2020a)
% Simulink 3D Animation Version 9.0 (R2020a)
% Simulink Coder Version 9.3 (R2020a)
% Simulink Control Design Version 5.5 (R2020a)
% Simulink Design Optimization Version 3.8 (R2020a)
% Stateflow Version 10.2 (R2020a)
% Statistics and Machine Learning Toolbox Version 11.7 (R2020a)
% Symbolic Math Toolbox Version 8.5 (R2020a)

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采纳的回答

Erich
Erich 2020-6-18
This is the response I got from MathWorks support:
"Thanks for sharing the information. Our development team has been aware of this error message and it will be fixed in MATLAB R2020a Update 4. This error message won't affect your ability of using MATLAB, so please ignore it for now."
  2 个评论
Rishabh Anand
Rishabh Anand 2021-1-13
The error is present even in R2020a update 6, however I solved it by re-installing matlab.

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更多回答（2 个）

Rishabh Anand
Rishabh Anand 2021-1-13
The error is present even in R2020a update 6, however I solved it by re-installing matlab.
Brad
Brad 2020-7-24
I had the same issue. I was able to fix the problem by entering a few simple commands (shown below). Note this process will reset MATLAB's path settings to factory default, so you may want to backup your current path like so:
>> savepath([pwd filesep 'pathbackup.m'])
To fix the warning message issue, enter the following commands...
>> rehash toolboxcache
>> restoredefaultpath
>> savepath
>> exit
The exit command will close MATLAB. After the program shuts down, restart MATLAB; the warning message should no longer appear. Upvote if it works! Comment if not!
  1 个评论
Erich
Erich 2020-7-24
Brad,
I did not need to take any of the steps you described. For me, updating to R2020a Update 4 was enough to get rid of the error message.
Erich

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