Unhappy [Q] Link2SD second partition problem

Hi people here's the problem:

I have a chinese mt6589 ICS, rooted, an SD class 10, partitioned a second part, fat32, primary, 1Gb to symlink apps using Link2SD, when i first boot with my new 2nd partition Link2SD runs the script and mount it everything seems to go fine, but here's the thing. After next power on of my phone the second partition doesn't mount anymore !!!! and Link2SD keep saying "script can't be created, mount: Invalid argument".
I erased the second part and parted once again, mounts by the first time as i said and the same problem .

Any ideas/solutions ??