Certain local files not syncing while others are

[danvgar]

I am running on OS X 10.9.5 and iOS 8.3.
Desktop Spotify is on version 1.0.7 and iOS Spotify is on version 3.3.0.
I am a Premium subscriber.
I am not even close to the 3,333 local file sync limit.
I have plenty of space on my iPhone.

When trying to sync local files on to my iOS, most of them go through okay. However, there is always a handful of songs per playlist that never sync, no matter how much I re-add them to the playlist or re-sync the playlist.

The files play fine on the Desktop version. But they are greyed out on the iOS playlists.

Any ideas? 

[L8on]

Sorry I don't have any advice for you @danvgar, but Spotify will probably tell you to re-install the app and try again. I'm adding this reply to hopefully make complaints about this issue more visible to Spotify.

Sometimes local files won't sync, and sometimes only specific local files will not sync while every other file will. There is no indication in any client why those tracks fail but others don't.

I have had this problem on and off for a while now. Syncing local files is one of the main reasons I pay for Spotify, but it doesn't always work. Other streaming services are starting to look more interesting....

Every support request about this problem leads to the same BS response and advice: re-installing the app and spend hours re-downloading gigs worth of your offline music again. Sometimes that fixes the local file problem, but then an app update will break them again.

Spotify, this is extremely frustrating. If you are going to advertise a feature to get paying customers, make sure it actually works. Don't keep breaking the feature with updates (have an actually data migration plan that doesn't screw over your paying customers), give users more insight into why specific songs won't sync (the generic, useless error messages are infurating), and give users more control over the cached data that seem to cause the problem (e.g. let me clear the cache of local files to trigger whatever needs to be triggered to re-download them instead of always having to re-install the whole application and re-download every single offline track).

Also, there is very little insight into why mobile Spotify clients sometimes can't connect to desktop clients. The desktop and mobile clients should be able to tell users why their mobile device is not connecting to their desktop client; a diagnostic mode (that checks for open ports, network settings, etc...) would be welcome and would lead to less infurated users like myself.