[CRASHING] Spotify crash while playing local files, iPhone 5S

[MacMerkur]

Situation:

iPhone 5S, IOS 7.1.2, Spotify v1.6.0.1746, Full battery, 2GB of free memory.

I have an off-line playlist, 134 songs long. Some of the songs are local files (mp3) I bought at other vendor's.

Problem:

Spotify crashes when trying to play one of 6 last songs (one mp3, rest synched from Spotify's library). It plays one second of them, then crashes. These songs play without problem in desktop and iPad Spotify.

Tried:

1. Clearing Safari history, cookies etc. Clean Spotify reinstall afterwards.

2. Moved those 6 songs to a new playlist, also crashes.

Your thoughts?

[AsherMusic]

Same thing is happening to me. Can't play local files.