[Konstantinos]

Using colours like that in texts must be defined as: "{RRGGBB}"
If the colour is defined as a number such as: 0xRRGGBBAA and you use it inside a text will result to the errors you got.

So:

pawn Код:

#define COL_WHITE "{FFFFFF}"

and

pawn Код:

ShowPlayerDialog(playerid, DIALOG_LOGIN, DIALOG_STYLE_INPUT,""COL_WHITE"Login",""COL_WHITE"\nType Your Password Below To Login","Login","Quit");