Error while loading Knime v 3.4

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Although not exactly the same, this sounds familiar:

Knime is not opening (Illegal Argument Exception)

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 er…