How do I turn off Plugin Manager

Hi,

The about window is there to let you know when there is a new version of either of the I2 plugins you have installed.

You can disable the notification by clicking the "I'll check later" button, and by unselecting the options:
"Notify me of new versions" and/or "Notify me of new betas"

Please, be aware, that this setting is stored per project/unity in your local computer, so if you have several projects, using I2 Localization, you will have to do this for each of them.

Another way to disable the notification is by deleting the file Assets\I2\Common\Editor\I2AboutWindow.cs
That will remove the code that checks for updates and shows the window.

Hope that helps,
Frank

The best way to disable the manager:
Update to the latest version (2.6.10b3) from the AssetStore, The popup will never show again, unless you manually select it from the menu to see if there is an update.
Now, instead of showing the popup whenever there is a new version, it will show it as an Info icon at the bottom of the inspector, small enough to not be disturbing, but there so that you know there is a new version with improvements and new features! And as always, if you open the AboutWindow and deselect the notify when a new versions is ready, it wont even show the icon.

If you can't update:
Open the I2AboutWindow.cs file and comment the content of the function I2AboutWindow.DoShowScreen()

Hope that helps,
Frank