unable to open add-ons menu

Fedora 32, matlab 2020b, Add-Ons menu does not open, got the following error:

Dot indexing is not supported for variables of this type.

Error in matlab.internal.addons.AddOnsWindow/bringToFront (line 68)

obj.webwindow.bringToFront();

Error in matlab.internal.addons.Explorer/bringToFront (line 65)

obj.addOnsWindowInstance.bringToFront();

Error in matlab.internal.addons.launchers.showExplorer (line 134)

matlab.internal.addons.Explorer.getInstance.bringToFront;

[Salvador Aleman]

I installed Matlab R2020b on CentOS 8 and am having the same issue. Tried to run Help->Check for updates and got similiar thing (i.e. the first line is the same)... I just can't log on to my account from the Matlab

[Pawel Rzonca]

I managed to open add ons manager on my Pop_OS! linux, removing libraries as described in arch wiki:

https://wiki.archlinux.org/index.php/MATLAB#Addon_manager_not_working

Answer 1

[Pawel Rzonca]

One need to remove libraries as described in arch wiki:

https://wiki.archlinux.org/index.php/MATLAB#Addon_manager_not_working

and link system libraries.

On Fedora 33 I removed the following libs from folder

matlabroot/R2017b/cefclient/sys/os/glnxa64

(star because there are three versions of this lib in matlab)

libgio-2.0.so*
libglib-2.0.so*
libgmodule-2.0.so*
libgobject-2.0.so*
libgthread-2.0.so*

and linked system versions of this libs at this place.

Answer 2

[Lanoosh Saadi]

g1=tf(80,[1 3 0])

h1=0.15

T1=feedback(g1,h1)

g2=tf(1,[1 0])

h2=1

T2=feedback(g2,h2)

step(T2)