hey guys.
i have a problem while installing adblock.

i tried the version from repositorys but didnt worl.so i decided to deinstall that one,deleting everything from extensions etc...

but if i use the manual installation,at point 3 while downloading and istalling the xpi microb says he downloads , installing..and then nothing is shown in the extension manager.
no please restart, neither adblock ....

what shall i do....?