Drivers vanished or not selectible

After talking to MOTU tech support to find out if Digital Performer would have any effect on my current Sonar setup (they said no effect) I installed a Trial version of DP.
 
I didn't like it, I uninstalled it and now only one input driver and one output driver are visible to Sonar. I reinstalled the drivers for my MOTU interface but it made no difference. 
 
I managed to get all the drivers to show up in the Audio dialog by running the wav profiler in WDM mode and then switching back to ASIO – but the drivers shown can't be selected.
I can deselect the 'Generic Low Latency' the one available driver but I can't select anything else in the list. This means that anything assigned to 3-4, 5-6, 7-8, Mix Return, AEU, or Phones can't be heard and I have no way of selecting them as input or output drivers.
 
How do I get all drivers to show up and be selectible?
 
Thanks - rev

Before this happened, I was able to check all the Input and Output drivers I wished to use in Sonar under Options > Audio > Drivers. They could all be checked at the same time. That meant they were available to me inside Sonar, anything I didn't select was not listed in Sonar. 
 
One at a time can't be the way it's supposed to work otherwise 1) 4 microphones for a barber's quartet (say, inputs 1, 3, 5 and 7) would not be possible because you wouldn't be able to select different Inputs at the same time, and 2) I just had it all configured so that I could select any of the Input or Output drivers checked in Options > Audio > Drivers.
 
 

Scook:
You're a goddam genius! 
 
That seemed to fix the availability issue, I still get the 'Silent outputs' error but that's nothing as long as all Outs are available. 
 
Thanks a lot! - rev