Problem with App designer 2019a

Hi!

After installing 2019a (had 2017b earlier) the appdesigner is no longer working. Buttons and stuff are missing in my old apps and also if I try to make new ones. The inspector panel is missing and I get the error:

Error using matlab.ui.control.internal.model.mixin.MultilineTextComponent/set.Text (line 49)

'Text' must be a character vector, a 1-D cell array of character vectors, a string array or a categorical array.

Error in matlab.ui.control.Button (line 51)

obj.Text = defaultText;

Error in appdesigner.internal.componentmodel.DesignTimeComponentFactory/createComponent (line 79)

component = feval(componentType,...

Error in appdesigner.internal.componentmodel.DesignTimeComponentFactory/createModel (line 17)

component = DesignTimeComponentFactory.createComponent(componentType, parentModel, peerNode);

Error in appdesservices.internal.interfaces.controller.DesignTimeParentingController/processClientCreatedPeerNode (line 181)

child = obj.Factory.createModel(obj.getModel(),peerNode);

Error in appdesservices.internal.interfaces.controller.DesignTimeParentingController/handlePeerNodeAdded (line 262)

obj.processClientCreatedPeerNode(peerNode);

Error in appdesservices.internal.interfaces.controller.DesignTimeParentingController>@(varargin)obj.handlePeerNodeAdded(varargin{:})

(line 125)

obj.ChildAddedListener = addlistener(obj.ProxyView.PeerNode,'childAdded', @obj.handlePeerNodeAdded);

Error in hgfeval (line 62)

feval(fcn{1},varargin{:},fcn{2:end});

Error in javaaddlistener>cbBridge (line 52)

hgfeval(response, java(o), e.JavaEvent)

Error in javaaddlistener>@(o,e)cbBridge(o,e,response) (line 47)

@(o,e) cbBridge(o,e,response));

[Nicolas B.]

Could you provide your source code or the relevant part of it? Like that, I don't see the potential problem.

Btw, have you also tried to run an example of App to check your installation?

If it can help, some persons have already had similar problems and they have simply copied their old code into a new App Designer "project" (source).

[Magnus Fransson]

Yes, even examples or a blank app (with a button added), same problem. I'm thinking now that there is a clash with the old 2017b that I removed but kept the preferences and command history. I'll try removing all Matlab files and reinstalling.

[Magnus Fransson]

Made a clean install of 2019a, but the appdesigner still doesn't work. When first started I got this message: "Unable to load individual component inspector cache".

Then, trying to add a button onto a new, empty app, I got the same message as before:

Error using matlab.ui.control.internal.model.mixin.MultilineTextComponent/set.Text (line

49)

'Text' must be a character vector, a 1-D cell array of character vectors, a string array or

a categorical array.

Error in matlab.ui.control.Button (line 51)

obj.Text = defaultText;

Error in appdesigner.internal.componentmodel.DesignTimeComponentFactory/createComponent

(line 79)

component = feval(componentType,...

Error in appdesigner.internal.componentmodel.DesignTimeComponentFactory/createModel (line

17)

component = DesignTimeComponentFactory.createComponent(componentType,

parentModel, peerNode);

Error in

appdesservices.internal.interfaces.controller.DesignTimeParentingController/processClientCreatedPeerNode

(line 181)

child = obj.Factory.createModel(obj.getModel(),peerNode);

Error in

appdesservices.internal.interfaces.controller.DesignTimeParentingController/handlePeerNodeAdded

(line 262)

obj.processClientCreatedPeerNode(peerNode);

Error in

appdesservices.internal.interfaces.controller.DesignTimeParentingController>@(varargin)obj.handlePeerNodeAdded(varargin{:})

(line 125)

obj.ChildAddedListener = addlistener(obj.ProxyView.PeerNode,'childAdded',

@obj.handlePeerNodeAdded);

Error in hgfeval (line 62)

feval(fcn{1},varargin{:},fcn{2:end});

Error in javaaddlistener>cbBridge (line 52)

hgfeval(response, java(o), e.JavaEvent)

Error in javaaddlistener>@(o,e)cbBridge(o,e,response) (line 47)

@(o,e) cbBridge(o,e,response));

Answer 1

[Edu Benet Cerda]

Hello Magnus,

Please contact techincal support with a full description of this issue.

[Magnus Fransson]

As it turns out it was a lingering pathdef file that caused the trouble. When I deleted that (which had a 3rd party toolbox included) Matlab worked normally again, no problem with appdesigner anymore.

I suspect the 3rd party toolbox (PLS_Toolbox from Eigenvector, v 8.6.2) that I had installed for 2017b have functions that were clashing with 2019a.