[Konstantinos]

Goto pawno\include directory and open a_mysql.inc file. At the end, it should have:

pawn Код:

forward OnQueryFinish( /* PARAMETERS HERE */ );

Those parameters changed in some version and they're not the same as the above.

Copy the parameters and then just use:

pawn Код:

public OnQueryFinish( /* THE PARAMETERS HERE */ )
{
    // rest