KNIME 4.2 swt library loading error on CentOS 6.9 Final

[ravikiran]

I could not start KNIME 4.2.0 on my CentOS 6.9 (Final). I am getting the below error. Do you have any suggestion?

=======================================================================
!SESSION 2020-06-29 10:18:41.065 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.8.0_252
java.vendor=AdoptOpenJDK
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Command-line arguments: -os linux -ws gtk -arch x86_64

!ENTRY org.eclipse.osgi 4 0 2020-06-29 10:18:53.081
!MESSAGE Application error
!STACK 1
java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
no swt-pi4-gtk-4932r18 in java.library.path
no swt-pi4-gtk in java.library.path
Can’t load library: /home/kuppuraj/.swt/lib/linux/x86_64/libswt-pi4-gtk-4932r18.so
Can’t load library: /home/kuppuraj/.swt/lib/linux/x86_64/libswt-pi4-gtk.so

at org.eclipse.swt.internal.Library.loadLibrary(Library.java:342)
at org.eclipse.swt.internal.Library.loadLibrary(Library.java:256)
at org.eclipse.swt.internal.gtk.OS.<clinit>(OS.java:90)
at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:209)
at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:155)
at org.eclipse.swt.widgets.Display.<clinit>(Display.java:164)
at org.eclipse.ui.internal.Workbench.createDisplay(Workbench.java:760)
at org.eclipse.ui.PlatformUI.createDisplay(PlatformUI.java:166)
at org.knime.product.rcp.KNIMEApplication.createDisplay(KNIMEApplication.java:215)
at org.knime.product.rcp.KNIMEApplication.start(KNIMEApplication.java:107)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
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:657)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594)
at org.eclipse.equinox.launcher.Main.run(Main.java:1447)
at org.eclipse.equinox.launcher.Main.main(Main.java:1420)

=======================================================================

Thanks
Ravikiran

[ztrubow]

Hi Ravikiran,

Could you please follow the instructions in this article, and see if the files listed here:

Can’t load library: /home/kuppuraj/.swt/lib/linux/x86_64/libswt-pi4-gtk-4932r18.so
Can’t load library: /home/kuppuraj/.swt/lib/linux/x86_64/libswt-pi4-gtk.so

are present and if there are any other files in those folders? If so, follow the instructions to gather the correct versions outlined:

Building HDFView 3.1.0 on CentOS 6: swt library not found

I know this may be a different version, but the steps outlined should be similar. Let me know if this helps.

Thanks,
Zack

[ravikiran]

Yes, I do have the just the below 2 files under /home/kuppuraj/.swt/lib/linux/x86_64/
libswt-pi3-gtk-4763.so
libswt-pi3-gtk-4932r18.so

I am now trying to follow the steps in the article you have sent. But for KNIME 4.2, could you let me know what to be replaced?

Thanks for your help.
Ravikiran

[ztrubow]

Hi Ravikiran,

Please see this FAQ on how to install the correct swk/gtk, even though the documentation says 3.x, it should apply to your 4.2 version:

https://www.knime.com/faq#q6
Under Fedora/CentOS/RHEL install webkitgtk (yum install webkitgtk)

and if you are noticing slowness or other issues, you can attempt the fix outline here:

https://www.knime.com/faq#q32

Please let me know if these help resolve your issue.

Thanks,
Zack

[ravikiran]

Thanks. But can we install GTK3 on CentOS 6.9? Do you have any idea?
The blocking factor itself is my CentOS version which is 6.9.

[ztrubow]

Hi Ravikiran,

I have just foudn out that CentOS 6.9 is not compatible with GTK3 and there for will not work with Knime. Please update your version of CentOS got a compatible version if you would like Knime to work.

Thanks,
Zack