The web interface no longer allows an admin user to add more than one "Installation" to a Build Environment.
Steps to Replicate:
Install 1.3.4 Beta...start Continuum
Add two installations (I added the ANT tool, and the Maven2 Tool)
Left Nav: Build Environment
Click on Add Button
Type a name for the build env. I called it "Test"
Click on Save Button
Combo Box has my Installation selected...click on Add
Switch Combo box to another instalation (I switched to ant). click on Add
-> A second installation is bound to the build environment
-> The initial installation seems to be overwritten by the second.
See attached screenshot.