Problem With Deep Learning Toolbox

Im trying to open the Deep Learning Toolbox. The following error is returned:

Error using deepNetworkDesigner (line 29)

Invalid default value for property 'Network' in class 'deepapp.internal.editor.import.NoArgsCallStrategy':

Undefined function 'mtimes' for input arguments of type 'nnet.cnn.layer.Layer'.

Similarly while calling a pretianed network in a code, following error is returned:

lgraphGoogLeNet = layerGraph(googlenet);

Warning: While loading an object of class 'DAGNetwork':

Too many input arguments.

Dot indexing is not supported for variables of this type.

Error in DAGNetwork/get.LayerGraph (line 188)

val = this.PrivateNetwork.LayerGraph;

Error in DAGNetwork/getLayerGraph (line 230)

layerGraph = this.LayerGraph;

Error in DAGNetwork/layerGraph (line 12)

internalLayerGraph = this.getLayerGraph();

[Walter Roberson]

The most common cause for this kind of problem, is if you have third-party functions with the same name as Mathworks-provided functions.

Sometimes it helps to use

restoredefaultpath; rehash toolboxcache

[Nitish]

Hi, thanks for the reply. I tried this fix, but it didnt work out.

Already I have done the fresh installation, but the same error is repeated.

[Peter Man]

Hi,

Can you help us diagnose the issue by telling us the answers to the following:

• What version of MATLAB are you using?
• What is the output of the following call:

        layerGraph()

• What is the output of the following call:

        which layerGraph

It's possible that there's something shadowing the layerGraph function.

• Do you have a startup.m script? If so, is it possible to try removing that startup.m script, just to see if that fixes things? It's possible there's something in the startup script which shadows the layerGraph() constructor function.

Thanks.

[Nitish]

Hi @Peter Man, thanks

Im using Matlab 2024a.

Upon using the above commands, got the following:

>> layerGraph()

Operator '*' is not supported for operands of type 'nnet.cnn.layer.Layer'.

Error in layerGraph (line 46)

throw(me)

>> which layerGraph

C:\Program Files\MATLAB\R2024a\toolbox\nnet\cnn\layerGraph.m

I have removed the startup.m also, again getting the same response as above.

[Torsten]

What's the output of

which -all layerGraph

?

I'm quite sure you have another file called "layerGraph.m" on your MATLAB path that is different from the toolbox file. Rename this file.

Or did you edit and made changes to the toolbox file ?

[Peter Man]

Interesting.

Could you now try calling the following:

layerGraph()

getReport(MException.last)

Alternatively, you could put a breakpoint at line 46 of C:\Program Files\MATLAB\R2024a\toolbox\nnet\cnn\layerGraph.m and call getReport(me) ?

This will help us identify where the error is being thrown from. But currently I'm at a loss as to why we are seeing this error at all given that a fresh install was performed (and I'm assuming no third party addons were installed as part of the fresh install?).

[Nitish]

Hi @Torsten and @Peter Man,

The output for which -all layerGraph is

>> which -all layerGraph

C:\Program Files\MATLAB\R2024a\toolbox\nnet\cnn\layerGraph.m
C:\Program Files\MATLAB\R2024a\toolbox\nnet\cnn\@DAGNetwork\layerGraph.m  % DAGNetwork method

and the output for getReport()

getReport(MException.last)
ans =
'Operator '*' is not supported for operands of type 'nnet.cnn.layer.Layer'.
Error in layerGraph (line 46)
throw(me)'

Thank you for your replies.

[Peter Man]

Ah, sorry, getReport(MException.last) won't do - my bad. Try putting a breakpoint as I suggested previously.

Answer 1

[Nitish]

@Peter Man Thanks a lot Sir.

I have been able to fix it, there as a function height.m in the current working directory. I renamed it.

Thanks a lot.