Cant add music tracks to MP (1 Viewer)

[AfshinBarani]

MediaPortal Version: 1.4.0

Description
Hi
I have a problem with adding music to MP. Had no issue with 1.3, but since upgraded to 1.4, cant add music tracks to MP. i changed the skin, tried to add just couple folder, no luck.
Went back to 1.3 and there was no issu at all. so i guess it has something to do with 1.4.
Added the log to the post, any help is much appreciated.

Steps to Reproduce:
As always added my music folder, then updated the database. in MP config tool, it shows that tracks have been added correctly, but when i try to open the music section in MP nothing's happening, like there's no music track at all.

 

[AfshinBarani]

Ok, i just uninstalled v1.4, reinstalled it again.
But this time, i did'nt use my old backup. now i can add music tracks to MP without problem.
But when i use backup setting plugin, i cant add music tracks.
And it is so hard for me to do all the settings again, i kinda HAVE TO use backup setting plugin.