[Konstantinos]

The percent symbol (%) can crash the server if it's used in inputtext.

pawn Код:

public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
    for (new i, length = strlen(inputtext); i != length; ++i)
    {
        if (inputtext[i] == '%') inputtext[i] = '#';
    }
    // rest of code..