Updated version of GGobi: 2.1.8

We've just posted an updated version of GGobi - version 2.1.8. This version fixes a number of small bugs, particularly with the
DescribeDisplay plugin. If you are on windows, make sure to also update to the latest version of gtk linked from the downloads page. Unfortunately we have been having problems with the mac package, so only linux and windows versions are currently available.

All files are available from http://ggobi.org/downloads

Please us know if you run into any problems.