I had the exact same problem. After searched around I finally figured out by accident, seriously, it was completely accidental.

here is what I did.

Open Registry Editor. If you don't know how to do it in Vista u can always search help and support.

Go to computer\HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\MCPCLIENT

if u can't locate mcpclient, just search it in the editor.

the first entry is (default), the orignal value is not defined, change it to blank, at least that's what I did. Close the editor. Restart OD plus. Create a seperate dock just for the systray icons.

I hope this helps.

BTW, make sure you download and install this program support. WWW Link


Remember there's always risk changing Registry so be careful. I hope this would help you or anyone having the same problem

Cheers

Am I to understand that creating a system tray dock in the 'regular' way did not work for you folks?  i.e. Dock Properties -> Dock Contents ->  Show System Tray Icons

I seem to recall (in the dim, dark past) having to delete or rename c:\program files\common files\stardock\trayserver.exe

Maybe it's still a problem for some people?