Hello All, It appears that the http://m2eclipse.sonatype.org/update/ update site does not currently allow users to install older versions of the M2Eclipse plugin. Eugene Kuleshov <http://jira.codehaus.org/secure/ViewProfile.jspa?name=eu> suggested that I post this issue on the user group. The issue in question is outlined in greater depth in http://jira.codehaus.org/browse/MNGECLIPSE-1224
Thanks, Philip