Thanks Ismael - but i did that several times now, removing the file from the server replacing it with changed file. Maybe i just have to try a few times more, but i now tried about 5 times. I think thou somehow without having much clue about programming, that the // just changes the code text to a non code one right? (uses at instructions etc.)
Just thinking perhaps as an alternative it could be something like: "jQuery(container).avia_deactivate_lightbox();" - I am not suggesting that outright - but merely some code that is not "// removed/deleted" but an active deactivation code.
Don´t know really - i just managed to test on 5 different mac´s, from 5 year old running older system and safari version to one 14 days old brand new running Snow Lion latest versions of all. A friend tested on PC with Firefox and Explorer. (Did not give versions thou) but all test had light boxes on. For my own test i cleared all history and all cashes. (I´m not running any other super cashing apps).
As we went through this once and it actually worked one or two times, i am wondering what cause the Code not to have the intended result.
I know that just a little bit of coding writing error can be an issue. But i directly copied your suggestion into the avia.js overwriting the active version (the code is greyed out as intended). I used Komodo Edit to to the replacement.