A few things that might help here, guys:
1. Common Updater is of no use with driver 8.64 or higher. It was designed to download and update to the latest version for previous series drivers for OS X, but it is no longer applicable since the release of drivers to support Lion. For consumer printers, a new app called Download Navigator will be installed with Epson drivers that does much the same thing (but direct from Epson, not via Apple). For the large format / pro printers, this isn't available and updates are via the various Epson websites. You can run Common Updater, but it won't do anything.
2. The control over the driver is as designed - Adobe is using the feature both under OS X and Windows to set the driver correctly based on your choice of whether the app is colour managing or whether the printer is doing it. Under OS X, though, it's quite forceful and you actually get the alternatives greyed out. Windows just sets it but doesn't lock the user out from changing it.
If you want access to the colour settings, you need to choose to let the printer manage colour in the app - if you want a colour managed workflow controlled by the app (recommended) then you shouldn't be changing the colour controls in the driver. If you need to make a profile, you should use the Adobe Color Print Utility.
Perhaps Eric or someone similar will pop by to clarify further, but that's my understanding of it all.