XCode Error: dsymutil failed with exit code 10

I have been struggling for a while with what appears to be a systemic problem using XCode. Periodically, my projects will begin to display an error:
        ‘Command /Developer/usr/bin/dsymutil failed with exit code 10’
Once the error appears, it can sometimes be eliminated by some combination of:

• doing a clean build
• restarting XCode
• rebooting the computer
• reinstalling the developer tools

Sometimes, of course, it can’t be eliminated. As documented here and here, I found a workaround. But the problem recurs. Sometimes very quickly after implementing the workaround (which isn’t a real quick fix).

At the moment, I’m trying a full command-line uninstall of all developer tools to be followed by a re-install. Perhaps that will help. In the meantime, if anyone out there knows what’s going on here, I’d love to hear the cause and a solution.