Knime is not opening (Illegal Argument Exception)

[magomed]

Hello,

I have a problem that after Knime (3.6.0) once crashed, I’m not able to open it anymore. I always get the log where I can find:

!SESSION 2018-08-28 11:32:59.979 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.8.0_152
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=de_DE
Command-line arguments: -os win32 -ws win32 -arch x86_64

!ENTRY org.eclipse.osgi 4 0 2018-08-28 11:56:18.361
!MESSAGE Application error
!STACK 1
java.lang.IllegalArgumentException: -2147483647 > 1
at java.util.Arrays.copyOfRange(Arrays.java:3480)
at java.util.Arrays.copyOfRange(Arrays.java:3441)
at org.eclipse.ui.internal.ide.ChooseWorkspaceDialog.lambda$6(ChooseWorkspaceDialog.java:384)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
at org.eclipse.ui.internal.ide.ChooseWorkspaceDialog.createUniqueWorkspaceNameMap(ChooseWorkspaceDialog.java:388)
at org.eclipse.ui.internal.ide.ChooseWorkspaceDialog.createRecentWorkspacesComposite(ChooseWorkspaceDialog.java:322)
at org.eclipse.ui.internal.ide.ChooseWorkspaceDialog.createDialogArea(ChooseWorkspaceDialog.java:176)
at org.eclipse.jface.dialogs.TitleAreaDialog.createContents(TitleAreaDialog.java:158)
at org.eclipse.jface.window.Window.create(Window.java:426)
at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1096)
at org.eclipse.jface.window.Window.open(Window.java:783)
at org.eclipse.ui.internal.ide.ChooseWorkspaceDialog.prompt(ChooseWorkspaceDialog.java:114)
at org.knime.product.rcp.KNIMEApplication.promptForWorkspace(KNIMEApplication.java:335)
at org.knime.product.rcp.KNIMEApplication.checkInstanceLocation(KNIMEApplication.java:282)
at org.knime.product.rcp.KNIMEApplication.start(KNIMEApplication.java:111)
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:388)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
at org.eclipse.equinox.launcher.Main.run(Main.java:1499)

Maybe somebody had the same problem, because there are workflows I would like to export and I would like to understand what actually the problem is.

Regards
Magomed.

[qqilihq]

Looks like something with your “recent workspaces” is so f*** up that the workspace chooser dialog cannot be opened. You will want to have a look at the org.eclipse.ui.ide.prefs file in your KNIME installation directory under Eclipse/configuration/.settings/org.eclipse.ui.ide.prefs with a text editor.

Relevant would be the RECENT_WORKSPACES entry which is a \n separated string of recent workspace locations. You’ll probably notice right-away that something looks weird and just delete anything except your actual workspace location.

Also feel free to post the file content here, so that someone else can have a look.

Else wise, I think it shouldn’t be a big issue just deleting the file – you’ll basically have to re-select your workspace location upon next Eclipse launch.

– Philipp

Disclaimer: I’m not a KNIME official and take no responsibility for the hints given above. In any case, please make a backup of any files which you delete or edit!

[magomed]

Hi Philipp,

Thank you very much! The content of the .prefs file is:

MAX_RECENT_WORKSPACES=10
RECENT_WORKSPACES=C:\nC:\Users\tha-anasov\knime-workspace\nC:\
RECENT_WORKSPACES_PROTOCOL=3
SHOW_RECENT_WORKSPACES=true
SHOW_WORKSPACE_SELECTION_DIALOG=true
eclipse.preferences.version=1

I did not delete anything yet, because I want to avoid deleting my workflows and I’m just newbie to Knime.

Maybe you could say what is wrong in the file?

Thanks in advance!

Regards
Magomed.

[qqilihq]

Hi Magomed,

looks like this is your actual workspace location: C:\Users\tha-anasov\knime-workspace

So, I’d simply replace the second line starting with RECENT_WORKSPACES as follows (the other entries listed there do not seem to make much sense and probably cause the exception shown above):

RECENT_WORKSPACES=C:\Users\tha-anasov\knime-workspace

Hope that helps!

[magomed]

Hi Philipp,

Thank you very much, it worked fine for me. It was really difficult to find out what the problem was, especially for a newbie :).

Have a nice day!

Regards
Magomed.

[qqilihq]

Great to hear, and thx for the feedback.

And for your reassurance: This error is definitely not “usual” behavior and probably only happened due to bad circumstances in conjunction with the mentioned crash.

Best,
Philipp