I have been using both stock, CM builds and other after market roms from my xperia x10 mini pro days. Now, I own an xperia mini pro and xperia z. I have installed various kitkat aftermarket roms on my xperia z. I installed the latest cm11, From here I could not change any contents on my SD card. Within the phone I cannot copy to or delete from the sd card. I tried all file managers including the ones with root permissions. I removed the sd card and tried direct copying. The fun is copying will be succesful. But once I unmount and remount the card, the contets wouldnt have changed. I try to format the card. It will get formatted but once I unmount and remount all the previous contents are intact. I the flashed back 4.3. There again the issue persisted.
I had the same issue with my xperia mini pro and cm11. Since then this is my second sd card(32 gb on mini pro and 64 gb on xperia z). I know there are certain issues with kitkat and sd cards. Can anybody please throw some light on resolving this issue. I am a rom hopper and I dont like to be cornered with these issues.
But strangely, I never had any issues with pabx's build.