Why isn't ROM Manager compatible with rooted S II?

[Guest GrimStranger]

I've rooted phones but I reckon this is a noob question - why isn't ROM Manager compatible with rooted S II? Is it due to the phone firmware or the app itself?

[Guest Exlo]

CWM Manager

Because of incompatibility with ROM Manager, I wrote and included "CWM Manager". This is a new app (as of March 30, 2011). You can find it under Applications -> CWM. It is much faster to use than manually booting into CWM and selecting these options.

http://forum.xda-developers.com/showthread.php?t=1103399