I've bought the mp3-encoder so that should not be the problem. I'm going to try to Bounce one track only and upload it to soundcloud instead of mutiple tracks.
 
Tried to upload just one track from within Sonar, no go, tried to Bounce the song and import it to a "test" projekt and upload from there, did not work. Wav and mp3 or flac doesn't matter? Really strange.
 
Could be some other problem with my PC as I occasionally is asked to revert to Classic Soundcloud as the new version of Soundcloud does not work.

Could it be something weird but simple, like running Sonar with Run As Administrator making any difference?  (I hate to even ask, because it seems like that option has popped up in my last thousand posts, for one reason or another, and I do not want to obsess over that any more than I already have)
 
Bob Bone
 

Thanks for the link. I'll give it a go. Also I'll see about the higher bit rate. Didn't seem to matter as my re downloads when A/B'd sound OK. I'm following the new rules for mastering for MP3 and I try not to go past -.6 Db. 

Always logged in as administrator when using Sonar X3d. Tried to shut down Norton InternetSecurity temporarily did not work either. I am going to keep trying, this is strange if it works for you.

@chrisland - it is important that you understand that logging in to a user that has administrative privileges is NOT the same as running an install or a program with the setting Run As Administrator.  These ARE 2 different things.
 
Even when you log on to a user that is an administrator, program execution has a reduced set of privileges.  This is how they designed and built Windows.
 
To TRULY execute programs, (even installers), with elevated privileges, you MUST explicitly set the option Run As Administrator.  If this is not done, then some things may not get done properly.
 
There are a couple of ways to set the Run As Administrator option.
 
1.  Right-click on the program icon or executable file, then click on Run As Administrator.  This method will set the option for only this execution instance.
 
2.  Right-click on the program icon or executable file, then click on Properties, then click on Advanced, then check the box for Run As Administrator and click OK, then back on the Properties dialog window, click Apply, then click OK.
 
Bob Bone
 

Been there done that!  that is what I meant by always administrator in Sonar.

I am sorry - perhaps I did not understand your earlier post,  - so you are saying that you EXPLICITLY use Run As Administrator to launch Sonar, AND that you explicitly used Run As Administrator to install Sonar?
 
Because logging in to Windows with an Admin user type is most definitely NOT the same as using Run As Administrator.  2 different things, that give you 2 DIFFERENT sets of execution privileges.
 
Please forgive my insistence at getting this point exactly correct, just trying to get it precisely determined.
 
Bob Bone
 

Yes to both questions. Always worth a try to reinstall Sonar I guess.

Thanks for clarifying - Yeah, I do not know what else to suggest.
 
Do you need the steps to remove Sonar - including the registry keys and hidden data and such?
 
Bob Bone
 

I think the run as administrator option changes in different versions of Windows 7. My Wife's laptop has Professional and I bought Premium which I was allowed to install on 2 computers. Hers asks for permission, mine does not. And with Premium there seems to be no option to run as administrator at all like there is on her version. I have never had any issues pertaining to the "run as Administrator" I keep reading about. At first I thought I might have a mess on my hands but 3 years down the road I see no issues.