Can't adjust project (Arduino) properties (jss and folder permissions)

[riban-bw]

I have a project that I have been working on for a few days. Today I selected Project->Properties->Arduino and was presented with an error, "Could Not Accept Changes", "The currently displayed page contains invalid values." The only thing I can remember changing is the USB serial interface. I have tried setting com port value in the .prefs file with no luck. (I think that may be a red herring.) I have updated to the latest nightly (2.4.0.201505050212) but no luck. I have restarted Eclipse (a few times). Any ideas how to rescue my project?

[riban-bw]

The project won't build. There is something very wrong yet I can't remember doing anything to break it!

[jantje]

I have seen the "The currently displayed page contains invalid values." error a couple of times. I have made some bug fixes lately that improved the situation. Seems there is still an issue somewhere.
I noticed that when I closed eclipse and reopened it works fine. Not sure why that won't work for you. Maybe poking around in the . pref file caused that. (I never poke around in eclipse files directly)
What I would do in your case is create a new project in the same workspace and drag and drop your code from the "bad project" to the "new project". Make sure you get a copy of the files and not a link.
Continue working from the new project.
As you are on the latest version you should be able to copy the libraries folder over from the "bad project" as well. Selecting the windows->reattach libraries should fix the build path in the new project. (never tried it though)

[riban-bw]

Ah! Security update for .NET (KB3037581) applied today. I wonder if that has caused problems. I am still able to compile C++ programs using cygwin or mingw compiler. And a load of Windows security updates.

[riban-bw]

I did try to create a new project but that isn't working either!

1. New Arduino sketch.
2. Enter name
3. Wizard won't go any further. Stuck at Project Name dialog.

[jantje]

something seems seriously wrong on your system.
Do you feel brave enough to do a debugging session?

[riban-bw]

I am brave but am working on a company laptop without admin rights so have limited functionality, e.g. I can not run application installers. (I am using Eclipse Portable.)

[jantje]

There is no need to install anything. It would be easier if you could install git but it is not needed.
Basically if you download the tarbal of the project (=workspace) https://github.com/jantje/arduino-eclipse-plugin/archive/master.zip and open the workspace with eclipse (a java development version) you should be able to debug and find what is causing the errors.

[riban-bw]

Hmm! I might have fixed it (though not sure how)! I downloaded the Product and created a new workspace. This allowed me to create a new project which I imported the files from the old project. I mad a couple of code tweaks* and saved this project. I was then able to open the same project from my original copy of Eclipse with your plugin and things were working. I can't explain why so much was not working before, even when I removed the project or created a new workspace. It would be useful to figure out what went wrong. I will play a bit more to see whether I can reproduce the problem and debug it. If I haven't managed within a couple of days, I will close this issue as resolved.
*The project I was using had a main.cpp file which is not part of the current wizard. I can't see that would cause the problems I experienced.

[jantje]

txs for the feedback

[riban-bw]

I haven't had time to investigate further. It seems okay now so I will close this issue and if there is recurrence, open another. Cheers!

[riban-bw]

This has recurred. I don't understand your instructions on debugging. I downloaded master.zip and opened it as a workspace. How do I now debug what is happening with eclipse / plugin when I try to use the plugin, e.g. create a new project?

[riban-bw]

Okay, I have a debug version of the application working. Clicking on "New Sketch" toolbar yields following debug output:

!ENTRY org.eclipse.ui 4 0 2015-05-13 20:37:21.184
!MESSAGE Unhandled event loop exception
!STACK 0
org.eclipse.e4.core.di.InjectionException: java.lang.UnsatisfiedLinkError: jssc.SerialNativeInterface.getSerialPortNames()[Ljava/lang/String;
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:62)
at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:247)
at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:229)
at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:149)
at org.eclipse.core.commands.Command.executeWithChecks(Command.java:499)
at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:825)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.handleWidgetSelection(HandledContributionItem.java:701)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.access$6(HandledContributionItem.java:685)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem$4.handleEvent(HandledContributionItem.java:613)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4353)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4172)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
at org.eclipse.equinox.launcher.Main.main(Main.java:1438)
Caused by: java.lang.UnsatisfiedLinkError: jssc.SerialNativeInterface.getSerialPortNames()[Ljava/lang/String;
at jssc.SerialNativeInterface.getSerialPortNames(Native Method)
at jssc.SerialPortList.getWindowsPortNames(SerialPortList.java:305)
at jssc.SerialPortList.getPortNames(SerialPortList.java:294)
at jssc.SerialPortList.getPortNames(SerialPortList.java:178)
at it.baeyens.arduino.arduino.Serial.list(Serial.java:70)
at it.baeyens.arduino.common.Common.listComPorts(Common.java:449)
at it.baeyens.arduino.ui.ArduinoSelectionPage.draw(ArduinoSelectionPage.java:240)
at it.baeyens.arduino.ui.NewArduinoSketchWizardBoardPage.createControl(NewArduinoSketchWizardBoardPage.java:49)
at org.eclipse.jface.wizard.Wizard.createPageControls(Wizard.java:178)
at org.eclipse.jface.wizard.WizardDialog.createPageControls(WizardDialog.java:759)
at org.eclipse.jface.wizard.WizardDialog.createContents(WizardDialog.java:622)
at org.eclipse.jface.window.Window.create(Window.java:435)
at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1101)
at org.eclipse.jface.window.Window.open(Window.java:797)
at it.baeyens.arduino.actions.NewSketchHandler.execute(NewSketchHandler.java:22)
at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:294)
at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)
... 38 more

[jantje]

It looks like jssc has a problem on your system.
Do you have multiple jssc's installed?
Do you have a special usb device that may cause this problem (when connected)?