Hi Lambert,
I think I have found something
can you try to remove from the manifest file inside the jar: servoygoy_servoycom.jar
the entries:
Name: .project
SHA1-Digest: 0SjaO8qMCEP9qRlGSEgRPxG7EvE=
and
Name: .classpath
SHA1-Digest: S7paNJWZfni+P5g1WWAXigp9uEc=
so every Name property, that does not have any resource
than sign the jar again, and try again?
This will propably not fix the whole problem, because there are a lot more (3th party) plugins that have this problem. (not valid Name entries in the manifest)