Sorry to bump this thread but I seem to be having this issue too - was working fine yesterday (although I have no idea if spotify updated since then), spotify now crashes (window closes, task hangs, needs to be ended in task manager) on startup.
Windows 10 Pro
Spotify version: 188.8.131.52.ga4e3ccee
Equalify version: 184.108.40.20666 (file version on dsound.dll)
renaming/deleting dsound.dll allows spotify to launch without issue.
I think his is usually fixed by restarting the computer (a couple of times might be required). This is an issue that happens to very few people and that we have had no success replicating. So it’s very hard to know what’s causing it. It also seems to fix itself randomly for everyone that has had the issue making it even harder to narrow down.
Please try a few reboots and see if that works and please let me know if it works or not. If it doesn’t we can try some debugging later when I’m back at the computer.
I am glad you got it up and running again…this isn’t a common thing that happens once it is installed…I have had it installed since it first came out and I haven’t had any problems like this…although I forget every once in a long long while that you need to play a song for the plugin to initialize.