System-Plugins won't activate, showing "license may be invalid" message

[Sergej Ehrlich]

We are evaluating Confluence 4.2.13 right now. Yesterday our test-server was restarted -- that was not planned and not our decision. After the reboot Confluence started, but a few system-plugins refused to start. Now if we try to activate them manually, a message appears, saying The plugin cannot be activated. Your license may be invalid...

This problem concerns the activation of these plugins:

- Applinks Product Plugin

- jira-connector

- JIRA Macros

- ...and maybe a few others

Background information: We were trying to evaluate Confluence with a JIRA-integration. We established a sync between the user directories and we added the application link successfully.

[Sergej Ehrlich · Accepted solution]

Hi Giuliano,

thank you for your advice. I also contacted the Atlassian-Support. They gave me the same advice first, but it didn't work.

Their second advice though was helpfull and solved our problem - we raised the allocated memory. So the problem was caused by limited memory causing the initialization of plugins to fail after 30 seconds default timeout.

Best regards

[Giuliano C_]

Could you please try to remove everything under the following directories:

The _<confluence-home>/bundled-plugins_ folder
The _<confluence-home>/plugin-cache_ folder
The _<confluence-home>/plugins-osgi-cache_ folder
The _<confluence-home>/plugins-temp_ folder
The _<confluence-home>/bundled-plugins_language_ folder

This approach will remove all bundled plugins from your instance, they will be generated again once you restart Confluence.

Hope it helps!