Version 0.4 has this compatibility:
- Firefox 1.5 - 3.0a7
- Thunderbird 1.5 - 3.0a1
- Sunbird 0.2 - 0.6a1
- Flock 0.4 - 1.5+
- Netscape 9.0 - 9.0 (minVersion SHOULD be changed to 9.0b1)

The AMO system would not let me upload the file when minVersion for Netscape was set to 9.0b1. Can the AMO techs please fix that? Netscape 9.0b1 is the current official version. Netscape 9.0 is not yet available. So this extension will not install into Netscape 9.0b1 if minVersion is set to 9.0.

In the Discussion section, you will find some links where you can download an alternative Version 0.4 from Add-ons Mirror (AMI). That build has Netscape 9.0b1 as the minVersion for that browser. AMO needs to fix the upload problem here for Netscape.

Version 0.3 has the following compatibility:
- Firefox 1.5 - 2.0.0.*
- Thunderbird 1.5 - 2.0b1
- Sunbird 0.2 - 0.4a1
- Flock 0.4.0 - 1.5+