Eclipse CDT shows errors at launching, randomly

When I launch Eclipse CDT I randomly get

Plug-in "org.eclipse.cdt.ui" was unable to instantiate class "org.eclipse.cdt.internal.ui.editor.CEditor".


and when clicking << Details

<< Details

org.eclipse.core.runtime.CoreException: Plug-in "org.eclipse.cdt.ui" was unable to instantiate class "org.eclipse.cdt.internal.ui.editor.CEditor".
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:194)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:186)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
...


If I close Eclipse and open it again, no errors are shown.

This happens randomly. I.e., sometimes I launch Eclipse and there are no errors. Sometimes I would get errors also on a second time I launch it so I have to close and open Eclipse again.

I am currently using Ubuntu 16.04 LTS, and Eclipse for Parallel Application Developers, Version: Kepler Release, but as far as I remember this happened with previous versions as well.

What are possible causes for this?

What are possible solutions for this?

As far as I am able to work with a non-dysfunctional Eclipse CDT I am ok, but I am afraid this is an announcement of a soon-to-break Eclipse.

PS: I am not certain the error is always the same. I will keep track of that and post updates as soon as I collect this info.

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