I get several system errors whenever any version of Sonar starts up. I've tried launching Sonar 8, 8.5, X1 and X2 (all Producer versions) and I get the same errors as follows:
 
"Transport::CreateUIWorker: Bidbridge.exe - System Error"
 
"The program can't start because __________.dll is missing from your computer. Try reinstalling the program to fix this problem."
 
The above blank can be filled in with the following:
QtGui4
QtSvg4
phono4
QtCore4
QtNetwork4
LIBEAY32
My question is, "What program needs to be re-installed?"

Those dlls are 3rd party libraries that are used by any number of applications, and are not tied to a specific program.

You can try running a tool like filemon in the background while Sonar is loading the project which watches what files are being opened. It can give some clues since you can see what the dll is that is being loaded by Bitbridge before the failure.