Mediascanner is not working currently am using a samsung galaxy note-2 with custom rom (slimkat 4.4.2.built 4 official)

from last few days some time my media scanner is not working properly.
sometimes after restarting it work fine.
but not always.

i already tried few media scanner from google play store
but when i run than apps ,they are crashed

It scan only my phone content not my sd-card, while using phone browser 


i can acess the card contents . but my galery ,musics players are not able to scan sd card media

can anybody have a solution for that
or else i have to wait for slimkat net update

thanks in advance
This can often be caused by filesystem corruption on the SD card. The SD card might appear to work normally if you don't access the corrupted parts of the filesystem, but since the media scanner reads the whole filesystem, it's much more likely to get stuck on a corrupted file or directory.

Try removing the SD card and using a card reader on your PC to check the filesystem (e.g. with scandisk or fsck).