OBR plugins, such as Gliffy, throws the following error during installation:

      2014-09-06 10:47:28,854 WARN [UpmAsynchronousTaskManager:thread-2] [upm.core.install.DefaultPluginInstallationService] execute com.atlassian.upm.spi.PluginInstallException: Unknown error, plugin not installed
       -- referer: http://localhost:8561/c561/plugins/servlet/upm | url: /c561/rest/plugins/1.0/ | userName: admin
      com.atlassian.upm.spi.PluginInstallException: Unknown error, plugin not installed
      	at com.atlassian.upm.core.install.ObrPluginInstallHandler.installResources(ObrPluginInstallHandler.java:228)
      	at com.atlassian.upm.core.install.ObrPluginInstallHandler.installPluginInternal(ObrPluginInstallHandler.java:146)
      	at com.atlassian.upm.core.install.AbstractPluginInstallHandler.installPlugin(AbstractPluginInstallHandler.java:48)
      	at com.atlassian.upm.core.install.DefaultPluginInstallationService.execute(DefaultPluginInstallationService.java:111)
      	at com.atlassian.upm.core.install.DefaultPluginInstallationService.install(DefaultPluginInstallationService.java:87)
      	at com.atlassian.upm.install.UpmPluginInstallationService.install(UpmPluginInstallationService.java:94)
      	at com.atlassian.upm.core.rest.resources.install.InstallTask.installFromFile(InstallTask.java:123)
      	at com.atlassian.upm.core.rest.resources.install.InstallFromFileTask.executeTask(InstallFromFileTask.java:38)
      	at com.atlassian.upm.core.rest.resources.install.InstallTask.call(InstallTask.java:60)
      	at com.atlassian.upm.core.rest.resources.install.InstallTask.call(InstallTask.java:34)
      	at com.atlassian.upm.core.rest.async.AsynchronousTaskManager$1.call(AsynchronousTaskManager.java:78)
      	at com.atlassian.upm.core.rest.async.AsynchronousTaskManager$1.call(AsynchronousTaskManager.java:73)
      	at com.atlassian.sal.core.executor.ThreadLocalDelegateCallable.call(ThreadLocalDelegateCallable.java:42)
      	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
      	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
      	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
      	at java.lang.Thread.run(Thread.java:722)
      

      Note however that the plugin still works perfectly fine after that. But the error is very misleading. This happens when there are dependent jars in the dependencies folder, and does not happen when the folder is empty.

      Installing the same plugin in earlier versions of Confluence do not have the same behavior.

      Other plugins with the same behavior: Scroll PDF Exporter, Scroll Versions.

          Form Name

            [CONFSERVER-34846] OBR plugin installation errors on Confluence 5.6.1

            I can confirm that my initial problem with CF 5.6.1 does not occur anymore with CF 5.6.6.

            Andreas Ebert added a comment - I can confirm that my initial problem with CF 5.6.1 does not occur anymore with CF 5.6.6.

            I'm getting this error on 5.4.3 trying to update the Comala Workflow Plugin

            Dana Jansen added a comment - I'm getting this error on 5.4.3 trying to update the Comala Workflow Plugin

            David Rizzuto added a comment - - edited

            Hi folks,

            I'm able to reproduce this on 5.6.1, using the gliffy plugin, version 6.4. However I tested this on 5.6.6, and the problem does not occur. We've made some other changes ad bugfixes to that area of the code, and this must have been fixed as well. Closing off.

            Please comment here if you still experience this bug in Confluence 5.6.6

            David Rizzuto added a comment - - edited Hi folks, I'm able to reproduce this on 5.6.1, using the gliffy plugin, version 6.4. However I tested this on 5.6.6, and the problem does not occur. We've made some other changes ad bugfixes to that area of the code, and this must have been fixed as well. Closing off. Please comment here if you still experience this bug in Confluence 5.6.6

            pcurren this is the issue I mentioned, possibly related to changes in CachingPluginStateStore?

            Steve Lancashire (Inactive) added a comment - pcurren this is the issue I mentioned, possibly related to changes in CachingPluginStateStore?

            RobertH added a comment -

            Experiencing on Gliffy and Bob Swift plugins as well.

            RobertH added a comment - Experiencing on Gliffy and Bob Swift plugins as well.

              drizzuto David Rizzuto
              fsim Foo Sim (Inactive)
              Affected customers:
              3 This affects my team
              Watchers:
              9 Start watching this issue

                Created:
                Updated:
                Resolved: