today i have epo 4.5 + agent 4.5p3, all very well.
BUT also i have MS Windows 2000 (SP?), - agent 4.5p3 not work with ms win 2000.
how use epo 4.5 + agent 4.5p3 + agent 4.0p? (for support legacy OS) ?
) sorry for my bad english ..
you can check in the older agent into the evaluation branch and change the deployment task for those specific machines to install the older agent.