Problem installing Unity_Iphone-1.0.1

I have installed (demo) version 2.1 of unity on my mac mini. When I go to install the iPhone app I get a warning that I am installing an older version and it will replace the newer version if I continue.

I presume it means the base unity platform (I thought they were separate apps). So do I ignore the warning and continue? Does it mean that the iPhone app is installed with unity2.1? or is it a bug?

Thanks -Vicki-

Finally asked the right search in google and found the answer here
http://forum.unity3d.com/viewtopic.php?t=17940

Ignore and continue to