xtext.common.types.originalEditorSelector starting Eclipse 4-37

[pvschubert]

Let's make sure issue is not already fixed in latest builds first.

• I verified I can reproduce this issue against latest Integration Build of Eclipse SDK

Steps to reproduce

From a fresh installation and clean workspace:

• *Start Eclipse -> Open Perspective "BWMT" -> Search for CompositeProvider "V1HC_CP_001" -> open it for project DIB -> error

I tried to check for any update. But there is no new software available.
I checked if org.eclipse.jdt.debug was missing as plug in. But it is available.
I deactivated the file. Seems to work but has to be done for all CITRIX-VMs (1.000 VMs). And could not be the final solution

• <... trigger issue>

I expected: while open a BWMT-object (i.e. Composite Provider V1HC_CP_001)

But got:
The 'xtext.common.types.originalEditorSelector' extension from plug-in 'org.eclipse.xtext.common.types.shared' to the 'org.eclipse.ui.ide.editorAssociationOverride' extension point failed to load the editor association override class.
com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: org/eclipse/jdt/debug/core/IJavaThread (occurred in org.eclipse.xtext.common.types.shared.SharedCommonTypesExecutableExtensionFactory)
com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: org/eclipse/jdt/debug/core/IJavaThread

From T:\CTX\Eclipse_V437

<relevant log output>

Tested under this environment:

• OS & version: Win11
• Eclipse IDE/Platform version (as shown in Help > About): Version: 2025-09 (4.37)
• ...Anything else that can be useful...

Community

• I understand reporting an issue to this OSS project does not mandate anyone to fix it. Other contributors may consider the issue, or not, at their own convenience. The most efficient way to get it fixed is that I fix it myself and contribute it back as a good quality patch to the project.

[merks]

It would be best to report this directly to the software provider. I assume that's SAP:

https://userapps.support.sap.com/sap/support/knowledge/en/3325422

The latest release is 2026-03...

[pvschubert]

Hi @merks thanks for your reply. I already raised an incident at SAP. But not sure if this is a pure SAP issue as this "org.eclipse.xtext.common.types.shared_2.40.0.v20250825-0355.jar" seems not to be a specific SAP file. So I tried to ask the community here for additional help. Regards, Peter

[merks]

It’s not the latest release version and is provided by xtext so you might ask here if the problem you have looks familiar

https://github.com/eclipse-xtext/xtext/discussions

The symptoms suggest a mismatch between you jdt version and the xtext version.

[cdietrich]

@merks @iloveeclipse

Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.jdt.internal.debug.core.JDIDebugPlugin.start() of bundle org.eclipse.jdt.debug.
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:847)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:768)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:1066)
	at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:394)
	at org.eclipse.osgi.container.Module.doStart(Module.java:643)
	at org.eclipse.osgi.container.Module.start(Module.java:500)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:528)
	at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:122)
	... 141 more
Caused by: java.lang.NoClassDefFoundError: com/sun/jdi/VMDisconnectedException
	at org.eclipse.jdt.internal.debug.core.JDIDebugPlugin.start(JDIDebugPlugin.java:326)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:826)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:1)
	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:818)
	... 148 more
Caused by: java.lang.ClassNotFoundException: com.sun.jdi.VMDisconnectedException cannot be found by org.eclipse.jdt.debug_3.24.0.v20250729-0743
	at org.eclipse.osgi.internal.loader.BundleLoader.generateException(BundleLoader.java:567)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass0(BundleLoader.java:562)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:438)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:195)
	at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
	... 153 more

is this cause jre or insufficient justj is used?

[merks]

Even the minimal JustJ JRE has the jdk.jdi module

[cdietrich]

then i am clueless due to insufficient jdt knowledge

[merks]

Yes I have no clue either.

@pvschubert

Can you provide details about what jdk you’re using?

[cdietrich]

the log he attached to eclipse-xtext/xtext#3497 (comment) says
Command-line arguments: -os win32 -ws win32 -arch x86_64 plugins/org.eclipse.justj.openjdk.hotspot.jre.full.win32.x86_64_21.0.5.v20241023-1957/jre/bin

[merks]

I’m looking on my phone (while on vacation) so it’s hard to see all long lines and long logs.

If this were a general problem we’d have seen them in the IDE products long ago.

[cdietrich]

yeah i also dont know if that log file is the correct one

[pvschubert]

Dear @cdietrich and @merks thanks a lot for your assistance. Do you need further logfiles provided by me now? Or is anything clear now for you?

[merks]

We have no clue and no way to reproduce the problem. If it were me, I’d create a fresh new installation based on 4.39 / 2926-03.

[pvschubert]

We have no clue and no way to reproduce the problem. If it were me, I’d create a fresh new installation based on 4.39 / 2926-03.

That is a good point. But unfortunatly the HANA-tools were not supported for the release at the point we set up the installation. We were forced to use V.37 instead V4.39. And I prefer not to install the latest version to have the option to get bugfixes using the last but not least version. Thanks for your help so far.