In build.gradde add 'Bundle-SymbolicName' : 'eu.hansolo.medusa' to jar manifest attributes, thus avoiding it being set by default to 'Medusa'.
'Bundle-SymbolicName' : 'eu.hansolo.medusa'
Added Bundle-SymbolicName to build.gradle (fix for issue #44)
Will come with version 6.1
Have you an idea about when 6.1 will be released?
Maybe I'll implement the new average feature in more skins first before I'll release 6.1...but it might be within the next week...