DLC disappeared, but in store still marked as purchased

[matemink]

Hello. I bought this game on Steam, and then I purchased 4 DLC in different time (additional songs) but when I bought 3 Doors Down - Kryptonite and played couple times it is disappeared from list of purchased DLC in Steam and from list of songs in game, BUT if search this DLC in Steam store it is marked as already purchased OR if I open songs shop from game and search this songs it is also marked as purchased. Can you help me, please?

this DLC http://store.steampowered.com/app/206118/

But other my DLC songs are works fine.

[Boris the Animal]

Ensure you're online in RS. If you've done that, verify integrity in your Steam Lib via RS. If neither work, reply back and we can continue trouble shooting.

[matemink]

Yes I am sure online in RS. How can I verify integrity in Steam Lib via RS?

[MTZIGG]

right click rocksmitrh2014 in your library list click properties >you'll find it under local files tab .verify integrity
If dose'nt work exit steam >deleate the appcache folder> "C:\Program Files (x86)\Steam
restart steam

[Anita Max Wynn]

Did the game update for you before you started playing? The game needs to update before you start so the song is on the list

[matemink]

I resolved my problem, after your's suggestion, I verified integrity, and one file was restored and when I started game I found this 3 doors down song, but in DLC list it is not displayed, because it is DLC for RS original, but I have RS 2014 *facepalm* so as support team said it is normal, and I will see this DLC only in game, not in RS 2014 DLC list. So problem can be closed. Thanks for everybody!