don't think its really an error message, but there must be somethng wrong for sure
when googling for this message http://www.google.nl/search?q=amaroK%3A+%5BLoader%5D+Don't+run+gdb%2C+valgrind%2C+etc.+against+this+binary!+Use+amarokap+ p.&start=0&ie=utf-8&oe=utf-8&client=firefox-a&rls=org.mozilla:en-US
there seem to be problems with some mysqllibs and alsa with other users, but they get a more precise message then you do.
can i ask what exactly the reason was for upgrading amarok?
if the previous version you had installed worked fine it would be my first hunch that that is causing your problem for as far as i can tell from here.
if the previous version worked, can you try to downgrade your amarok version?