Darioc, did your sdcard mount in let's say Kitkat or is this the first rom you flashed after repartitioning? As far as I know a couple of people here have repartitioned their device but haven't run into any trouble.
If the last one is the case you might have made a slight mistake at the step where you have to reformat it as fat32.
Could you use adb and show the output of:
adb shell parted /dev/block/mmcblk0 print
For some reason my laptop isn't connecting through adb (needs mantainance ) so i did the print of the partition on the phone and i can confirm the sdcard is fortmated as fat32... hope this late response helps in any way!!