Solution
The mapping of network drives must happen during agent startup. The relevant exec command (such as "exec net use t: //remotemachine/share" or "exec cmd /c subst Z: D:/snapshot") can be placed into c:\Ecloud\i686_win32\bin\runagent.local.
Another issue to consider is that any resources accessed must be accessible by the user that runs the agent processes. Verify the user that runs the agent by checking for agent.exe in the process list available from the Taskbar.