"PowerPC applications are no longer supported"

Some older Apps were based on what is called PowerPC coded software, and Lion OS X is no longer compatible with those Power PC based Apps. So your two choices are basically to either buy a newer Lion compatible version of each of those Apps Or to remove Lion and reinstall Snow Leopard which is compatible with PPC Apps.

Hope this helps 🙂

Rather than nasty recriminations, how about some solutions:

1. Yes, you could wipe your drive and reinstall Snow Leopard; but no Lion, no iCloud...

2. You could partition your HD with Snow Leopard on one paritition and keep Lion on the other (or install Snow Leopard into an external HD), but these Dual-Boot solutions have the same disadvantages as Boot Camp did for Windows.

3. You could install Snow Leopard (and Rosetta) into Parallels 7 in Lion and have concurrent capabilities:

Full installation instructions are here:

http://forums.macrumors.com/showthread.php?t=1365439

I know this is a super old post, but Spotify randomly gave me this problem today, in 2016. I've tried reinstalling the app over and over, but nothing works.

I haven't updated the OS since El Capitan came out however long ago and everything has worked fine.

I don't know if this is just another Apple beef with Spotify or if there is some fix you guys found way back in 2012 that I could use now?

https://discussions.apple.com/thread/3266745?answerId=15944537022#15944537022

That is because you should of searched what Lion does and doesn't do before you upgraded.

Wipe the drive and reinstall Snow Leopard.

I know I am going to get greif for this, but this is why I stick with windows. I am on my MBA right now BTW, but as a main machine, always use windows.