Sonar X1 does not start sometimes

Sometimes, if I wish to load/open Sonar X1 (Win 7, 64bit, the program does not start). If I re-start the computer, and try it again, it works nearly every time. Sometimes the problem appears at the beginning of a session; but more often it appears, if I closed Sonar X1 and wish to start it anew. Do you have answers for that problem? Is there an update fixing that problem?

Sometimes, if I wish to load/open Sonar X1 (Win 7, 64bit, the program does not start). If I re-start the computer, and try it again, it works nearly every time. Sometimes the problem appears at the beginning of a session; but more often it appears, if I closed Sonar X1 and wish to start it anew. Do you have answers for that problem? Is there an update fixing that problem?

I'd guess the reason it doesn't open (the 2nd time) is that Sonarpdr.exe is still running in the background.
Next time this happens, check to see if it's running.  If so, right-click on it and choose End Process.
Now see if X1 opens...