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The files in modules/ext 1) jira-rest-java-client-1.1-ide-m06.jar 2) jira-rest-java-client-1.1-m02.jar just seem to be different versions of the same lib. Only #1 is actually used. The setup is also strange in that #1 is included in the NBM and #2 is downloaded from Maven. Looks like the upgrade was not done correctly in the past.
fixed in core-main #76039bd0a227
trnasplanted in to releases #3905cf126ee3 (branch release80)
Integrated into 'releases/release80', will be available in build *201402202300* or newer. Wait for official and publicly available build. Changeset: http://hg.netbeans.org/releases/rev/3905cf126ee3 User: Tomas Stupka <tstupka@netbeans.org> Log: Issue #242135 - JIRA plugin installation contains duplicated JARs (transplanted from 76039bd0a227d709080fbfe0faa182d2d01e3fae)
Integrated into 'main-silver', will be available in build *201402210001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-silver/rev/76039bd0a227 User: Tomas Stupka <tstupka@netbeans.org> Log: Issue #242135 - JIRA plugin installation contains duplicated JARs