Problem with Playlist Analysis & Track Sync Button

[Tropixmix]

Recently, I've been unable to analyze my playlists. It visually appears to be performing the analysis (albeit MUCH faster than it normally takes) but there is really no analysis happening. None of the tracks not already analyzed have the BPM data (shows blank, like an new unanalyzed track). Additionally, a new glitch has developed last night wherein tracks I purchased last night (via iTunes as per usual) give the appearance of being analyzed but the BPM registers as zero and the Synch button no longer will start (or analyze) the track. I've tried restarting my iPhone but that did not resolve.

[Tropixmix]

An additional issue that has emerged is that, one a track is in play, I can no longer advance it by sliding the time bar.