On a development environment i've upgrade from 7.1.10 (software) to Jira 7.6.1 (software). It tells me that the Jira software plugin is disabled with this error...
2017-11-22 16:28:32,059 JIRA-Bootstrap ERROR [c.a.p.osgi.factory.OsgiPluginInstalledHelper] Cannot determine required plugins, cannot resolve bundle 'com.atlassian.jira.software-application'
2017-11-22 16:28:35,866 JIRA-Bootstrap ERROR [c.a.p.osgi.factory.OsgiPlugin] Detected an error (BundleException) enabling the plugin 'com.atlassian.jira.jira-software-application' : Unresolved constraint in bundle com.atlassian.jira.software-application [76]: Unable to resolve 76.0: missing requirement [76.0] osgi.wiring.package; (osgi.wiring.package=com.atlassian.greenhopper.obr.install). This error usually occurs when your plugin imports a package from another bundle with a specific version constraint and either the bundle providing that package doesn't meet those version constraints, or there is no bundle available that provides the specified package. For more details on how to fix this, see https://developer.atlassian.com/x/mQAN
2017-11-22 16:28:35,866 JIRA-Bootstrap WARN [c.a.plugin.impl.AbstractPlugin] Unable to enable plugin 'com.atlassian.jira.jira-software-application'
2017-11-22 16:28:35,866 JIRA-Bootstrap WARN [c.a.plugin.impl.AbstractPlugin] Because of this exception
com.atlassian.plugin.osgi.container.OsgiContainerException: Cannot start plugin: com.atlassian.jira.jira-software-application
at com.atlassian.plugin.osgi.factory.OsgiPlugin.enableInternal(OsgiPlugin.java:418)
at com.atlassian.plugin.impl.AbstractPlugin.enable(AbstractPlugin.java:287)
at com.atlassian.plugin.manager.PluginEnabler.actualEnable(PluginEnabler.java:130)
at com.atlassian.plugin.manager.PluginEnabler.enable(PluginEnabler.java:107)
at com.atlassian.plugin.manager.DefaultPluginManager.enableDependentPlugins(DefaultPluginManager.java:1248)
at com.atlassian.plugin.manager.DefaultPluginManager.addPlugins(DefaultPluginManager.java:1218)
at com.atlassian.jira.plugin.JiraPluginManager.addPlugins(JiraPluginManager.java:153)
at com.atlassian.plugin.manager.DefaultPluginManager.earlyStartup(DefaultPluginManager.java:597)
at com.atlassian.jira.plugin.JiraPluginManager.earlyStartup(JiraPluginManager.java:119)
at com.atlassian.jira.ComponentManager$PluginSystem.earlyStartup(ComponentManager.java:641)
at com.atlassian.jira.ComponentManager.quickStart(ComponentManager.java:196)
at com.atlassian.jira.ComponentManager.start(ComponentManager.java:165)
at com.atlassian.jira.upgrade.PluginSystemLauncher.start(PluginSystemLauncher.java:47)
at com.atlassian.jira.startup.DefaultJiraLauncher.lambda$postDbLaunch$2(DefaultJiraLauncher.java:154)
at com.atlassian.jira.config.database.DatabaseConfigurationManagerImpl.doNowOrEnqueue(DatabaseConfigurationManagerImpl.java:304)
at com.atlassian.jira.config.database.DatabaseConfigurationManagerImpl.doNowOrWhenDatabaseActivated(DatabaseConfigurationManagerImpl.java:199)
at com.atlassian.jira.startup.DefaultJiraLauncher.postDbLaunch(DefaultJiraLauncher.java:146)
at com.atlassian.jira.startup.DefaultJiraLauncher.lambda$start$0(DefaultJiraLauncher.java:105)
at com.atlassian.jira.util.devspeed.JiraDevSpeedTimer.run(JiraDevSpeedTimer.java:31)
at com.atlassian.jira.startup.DefaultJiraLauncher.start(DefaultJiraLauncher.java:103)
at com.atlassian.jira.startup.LauncherContextListener.initSlowStuff(LauncherContextListener.java:157)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.osgi.framework.BundleException: Unresolved constraint in bundle com.atlassian.jira.software-application [76]: Unable to resolve 76.0: missing requirement [76.0] osgi.wiring.package; (osgi.wiring.package=com.atlassian.greenhopper.obr.install)
at org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:3974)
at org.apache.felix.framework.Felix.startBundle(Felix.java:2037)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:955)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:942)
at com.atlassian.plugin.osgi.factory.OsgiPlugin.enableInternal(OsgiPlugin.java:399)