Out of Date Plugin Errors

If the console says a plugin is outdated or fails to enable, that plugin was made for a different Minecraft version than your server.

Fix it

Open the Console tab and scroll through the startup messages. Look for a red or warning line naming the plugin.
Update it:
- In the Plugins tab (if available), search for the plugin and install the newest version. See Installing Plugins.
- Or download the newest .jar from the plugin’s official page and upload it to plugins, replacing the old file.
If no newer version exists, remove the old .jar from plugins or find an alternative.
Restart the server.

After updating Minecraft, update your plugins too. See Updating Your Server.
Many plugin errors are caused by one missing dependency. Read the line right before the error.
To find a plugin that causes a crash, use the Binary Search method.