I installed the software for the apollo and authorized the plugins.I keep getting error messages a f/w controller has changed or max the bandwith or the f/w buss has been exceeded. also one or more uad 2 devices is connected to a f/w bus controller that has issues running at f/w speed. also the green steady light does not come on.. ua audio tech told me i have to buy another f/w port that support the apollo.since the ones that come on the macs are not supported. is this true? im running a mac pro 266 dual core 10 g of ram.