Solved! Go to Solution.
I have found a solution for the broblem.
Spotify seems to fail to load if user has not set a [system name] for ps3 system in [system settings]. Mine ps3 had blank field over system name and Spotify app failed to load, there was only those 3 dots for a while before returning to XMB.
Spotify connect uses [system name] to differentiate between each system, so its quite obivous that Spotify wont load if that field is empty.
Spotify devs should add a test on load which displays an error if system name is not set.