GUIDE 'myGuiName.fig' ERROR Can't open the figure window

I built a GUI in 2015a and can no longer open the GUI figure window. Here's the error

com.mathworks.toolbox.matlab.guide.palette.GObjectProxy(adpt{i},str,parentHeight,view)

Java exception occurred:

java.lang.NullPointerException

at com.mathworks.toolbox.matlab.guide.palette.GObjectProxy.updateAppearance(GObjectProxy.java:794)

at com.mathworks.toolbox.matlab.guide.palette.GObjectProxy.updateUIControl(GObjectProxy.java:761)

at com.mathworks.toolbox.matlab.guide.palette.GObjectProxy.updateProxy(GObjectProxy.java:406)

at com.mathworks.toolbox.matlab.guide.palette.MObjectProxy.init(MObjectProxy.java:164)

at com.mathworks.toolbox.matlab.guide.palette.GObjectProxy.<init>(GObjectProxy.java:167)

at com.mathworks.jmi.NativeMatlab.SendMatlabMessage(Native Method)

at com.mathworks.jmi.NativeMatlab.sendMatlabMessage(NativeMatlab.java:266)

at com.mathworks.jmi.MatlabLooper.sendMatlabMessage(MatlabLooper.java:120)

at com.mathworks.jmi.Matlab.mtFevalConsoleOutput(Matlab.java:1778)

at com.mathworks.jmi.MatlabWorker.feval(MatlabWorker.java:195)

at com.mathworks.jmi.MatlabWorker.feval(MatlabWorker.java:172)

at com.mathworks.toolbox.matlab.guide.utils.LayoutWorker.runOnMatlabThread(LayoutWorker.java:51)

at com.mathworks.jmi.MatlabWorker$2.run(MatlabWorker.java:79)

at com.mathworks.jmi.MatlabWorker.start(MatlabWorker.java:248)

at com.mathworks.toolbox.matlab.guide.utils.LayoutWorker.start(LayoutWorker.java:70)

at com.mathworks.toolbox.matlab.guide.utils.LayoutWorker.fevalConsoleOutput(LayoutWorker.java:41)

at com.mathworks.toolbox.matlab.guide.LayoutLooper.readFigure(LayoutLooper.java:711)

at com.mathworks.toolbox.matlab.guide.LayoutEditor.openLayoutEditor(LayoutEditor.java:2014)

at com.mathworks.toolbox.matlab.guide.LayoutEditor.openLayoutEditor(LayoutEditor.java:1977)

Any suggestions would be greatly appreciated.

[Walter Roberson]

If you can attach the .fig and the .m code, then I will try my analyzer on it to see if I can see any problems with it.

[KMM]

Thank you for offering to help. I've tracked it down to guidefunc.m line 2137

prox{i} = com.mathworks.toolbox.matlab.guide.palette.GObjectProxy(adpt{i},str,parentHeight,view);

where i = 119

in a loop that goes to 466

There are 466 'kids'

This is in the function localScanChildren

The error is below. Is this a JAVA issue?

************************************************************************************************************

K>> prox{i} = com.mathworks.toolbox.matlab.guide.palette.GObjectProxy(adpt{i},str,parentHeight,view);

Java exception occurred:

java.lang.NullPointerException

at com.mathworks.toolbox.matlab.guide.palette.GObjectProxy.updateAppearance(GObjectProxy.java:794)

at com.mathworks.toolbox.matlab.guide.palette.GObjectProxy.updateUIControl(GObjectProxy.java:761)

at com.mathworks.toolbox.matlab.guide.palette.GObjectProxy.updateProxy(GObjectProxy.java:406)

at com.mathworks.toolbox.matlab.guide.palette.MObjectProxy.init(MObjectProxy.java:164)

at com.mathworks.toolbox.matlab.guide.palette.GObjectProxy.<init>(GObjectProxy.java:167)

at com.mathworks.jmi.NativeMatlab.SendMatlabMessage(Native Method)

at com.mathworks.jmi.NativeMatlab.sendMatlabMessage(NativeMatlab.java:266)

at com.mathworks.jmi.MatlabLooper.sendMatlabMessage(MatlabLooper.java:120)

at com.mathworks.jmi.Matlab.mtFevalConsoleOutput(Matlab.java:1778)

at com.mathworks.jmi.MatlabWorker.feval(MatlabWorker.java:195)

at com.mathworks.jmi.MatlabWorker.feval(MatlabWorker.java:172)

at com.mathworks.toolbox.matlab.guide.utils.LayoutWorker.runOnMatlabThread(LayoutWorker.java:51)

at com.mathworks.jmi.MatlabWorker$2.run(MatlabWorker.java:79)

at com.mathworks.jmi.MatlabWorker.start(MatlabWorker.java:248)

at com.mathworks.toolbox.matlab.guide.utils.LayoutWorker.start(LayoutWorker.java:70)

at com.mathworks.toolbox.matlab.guide.utils.LayoutWorker.fevalConsoleOutput(LayoutWorker.java:41)

at com.mathworks.toolbox.matlab.guide.LayoutLooper.readFigure(LayoutLooper.java:711)

at com.mathworks.toolbox.matlab.guide.LayoutEditor.openLayoutEditor(LayoutEditor.java:2014)

at com.mathworks.toolbox.matlab.guide.LayoutEditor.openLayoutEditor(LayoutEditor.java:1977)

[Walter Roberson]

That is a section of MATLAB code that I am not familiar with.

As an experiment I would suggest going into MATLAB Preferences and increase Java Heap -- just in case the problem is running out of memory at the Java level. You will need to restart MATLAB after increasing the heap for it to take effect.

Answer 1

[KMM]

Thanks for the suggestion. I get the same error after increasing Java Heap and restarting. Attached is the window that pops up.