iNZight is running, but its very slow/laggy on Mavericks/Yosemite/El Capitan

This is a problem caused by "App Nap". To disable this feature ...

Find the iNZightVIT folder (normally it would be inside Applications).
Single-click the iNZightVIT icon inside the iNZightVIT folder, and press Command-I (that's i not L) on your keyboard.
_{If your initial install was older there will not be a iNZightVIT icon inside the iNZightVIT folder. Instead there will be a R icon. Apply the instructions to that instead.}
In the Info window that opens, tick the box to Prevent App Nap. (If you don't see this option, it simply means your machine doesn't support Power Nap)

It should work the next time you start up iNZightVIT.

App Nap behaviour can be strange. We have had several reports from people who have found that speed is much better when the R-console window is sitting directly behind the iNZight window.

I can't start iNZight after upgrading to OS X 10.10 Yosemite

The latest update to the Mac operating system, 10.10 Yosemite, has moved some things around. For now, it looks like you will need to reinstall XQuartz, which can be downloaded from here.

Make sure you completely quit R and XQuartz before reinstalling XQuartz by right-clicking their icons in the Dock and clicking on Quit.

I can't find iNZight after using the Package installer

The iNZightVIT package installer places iNZight in your Applications folder by default.

iNZightVIT doesn't load

There is a R session is headless; GTK+ not initialized message in the R console (just above You have successfully loaded ...)

Reinstall the correct version of GTK+ by simply following the same install instructions as before
- Mac OS X 10.9 or later: GTK+ 2.24.17
- Mac OS X 10.8 or earlier: GTK+ 2.18.5
Restart your mac

I've tried updating iNZight, but it doesn't work

If you have an old version of iNZightVIT (2.0.2 or earlier) you may be unable to run the updater. For now, the only solution is to download iNZightVIT again.

If you have a newer version of iNZight (version 2.0.3 or later), then we would like to know your updater isn't working. Please let us know here, and for now you will need to download iNZight again to get the latest version.

I'm getting error messages in the R console

Especially in the Snow Leopard/Lion/Mountain Lion versions of iNZightVIT, there are a some error messages that may look scary. The only time you should worry about these is if you don't get the iNZight window opening.

If iNZight is not working, and you're getting error messages, copy them and send us a bug report and we will get back to you as soon as possible.