I'm having the same problem. I unistalled my previous version and installed the new one, just as the instruccions say, and when I log in, the message "Updating" apears and Spotify quits after some seconds.
I'm a Mac OS X 10.5.8 user, and the version of spotify is the 0.8.5.
I got it working for just a couple of days using Spotify 0.8.5 on Mac OS 10.5.8 after reading the forum instructions but today I'm having the same problems with crash on launch every time.
Today Spotify was failing to launch then Relauncher was failing also.
After following all the uninstall/shutdown/reinstall steps with 0.8.5 again it's now giving me a message which says 'You cannot use this version of the application Spotify with this version of Mac OSX. So either 0.8.5 doesn't work or it's upgrading itself to a version that doesn't work before it even launches.
Frustrated! And still waiting for a response to my request 4 days ago to refund some of my unusable premium subscription.
same problem here. it was working yesterday but stopped today and geting the same message, can\t use this version of spotify with this mac. thinking of just cancelling by sub with spotify unfortunetly. It\s been unusable more days than I could listen to anything. Don\t understand why it has to update all the time, why you can\t just have the option to update.
I have the two locked files in my application support folder too by the way, like I did yesterday when it worked, but today none of that seems to make any difference