Config problems

[Flake]

As I progress on cleaning up my music files I periodically re-run the config to see what I'm doing is working and I have to say I'm just bewildered as to the results.  So last night I re-run the config and now none of my Alice in Chains albums show up - at all.  I can access them via the search function but they dont show up in the album view.  Now these files are all tagged properly and in mp3 format.  I have good coverart and everything.  They have even shown up and were working fine during earlier config runs.  Now all of sudden they aren't?  Also, none of my Radiohead coverart shows up now and it used to before?  These are not the only examples of problems just using them to describe the general pattern of random failure of my use of this software.

What gives?  I downloaded the demo version that was on this site back in late December.  Is this a stable version?  Should I download a new demo?