Update turn offFollow

hi everyone!!!
im new lol
and right now i have a problem who can't me play ffxi...;_;
then i have before a format hard disk ffxi in the pc and works fine...after the format i install POL,FFXI,RoZ,CoP and ToAU.
after this i go to mega update lol,first update PoL,all right and after this click update FFXI...to the start works fine but after a few a time(change everytime)PoL tun off and windows say the classical window of error send/not send...why???
i try unistall,reinstall already 3 times but no change.
after 1 week,i was seriusly angry and format one other time..no change again,please help me!!!