I can't seem to find where the logs are for script errors.  I'm just starting trying to write my own script and of course I get an error: "There are exceptions caught in the script. Please refer to the log!" Not sure where the log is.

Start Amarok from the shell like this: "amarok --debug".

Also note that qtscript is not too fond of outputting the error messages from exceptions on its own.

Adding

try {
    YOUR_STUFF_HERE
catch( e ) {
    print( e );
}

Will make the script print out any exceptions to the Amarok debug output in the terminal.