Larry , you experienced the same frustration as me ...so at the end you must choose :
use the CC or not
Me , to be able to install on D i had to skip the center and do a maunal install ....now the question for us is multiple
1) how can we get the center to reconise when we're up to date
2) how to handle roll back of versions
cause as soon as i use the center for any version handling on sonar , it creates one in C: ....the problem is that the one in D is not touched ....