Thanks for replying.

Yes, i'm rooted and on custom ROM and kernel with the sdcard read/write permissions fixed.
At this point i will try anything you suggest because i'm stumbed. Same configuration is running fine on my One X.

Let me try your suggestions and get back to you.

Thanks a lot for the suggestions. I downloaded the sd kitkat fixer and i suspected i was already on "fixed"
Regardless, i tried moving iGO folder on internal memory and kept "content" folder on sdcard (which is what i wanted anyway since i have arounf 7GB of data there) which seems that fixed the problem. I will check it out also tomorrow when i have to travel and report back.

In any case thanks a lot for the help!!