System won't recognize SDCard

Hello guys! I'm having some problems with my Z2! The system and Stock Sony apps won't recognize my SDCard, but I can access it through Root Explorer and ZArchiver.

The part of my Permission.xml file regarding external storage is as follows

<permission name="android.permission.READ_EXTERNAL_STORAGE">
<group gid="sdcard_r"/>
</permission>
<permission name="android.permission.WRITE_EXTERNAL_STORAGE">
<group gid="sdcard_r"/>
<group gid="sdcard_rw"/>
<group gid="media_rw"/>
</permission>
<permission name="android.permission.ACCESS_ALL_EXTERNAL_STORA GE">
<group gid="sdcard_r"/>
<group gid="sdcard_rw"/>
<group gid="sdcard_all"/>
</permission>
<permission name="android.permission.WRITE_MEDIA_STORAGE">
<group gid="media_rw"/>
</permission>

Is there something wrong?