having same problem here. The workaround is that you need to do an LAN-scan and then View by Grid in the LAN you scanned, then select the device and press the Deploy Agent button. But you cannot select the Agent you want to install if you have other pre-defined agents trough the Create Agent. For as I have 6 different agents for different networks. It just installs the basic agent.
Orrrrr, you can go to http://yourkserver/dl.asp on the PC you need install and select the Agent you want to install.
Im hoping this feature will come back very soon.
Regards,