errors - inconsistent return types (array & non-array)

Hallo,
wenn ich in meinem script die include

#include <SIF>

reinmache kriege ich die Fehler:

\Samp Server\pawno\include\YSI\y_utils.inc(420) : error 021: symbol already defined: "GetIP"
\Samp Server\pawno\include\YSI\y_utils.inc(433) : error 079: inconsistent return types (array & non-array)
(22549) : error 025: function heading differs from prototype
(22549) : error 025: function heading differs from prototype
(60371) : error 035: argument type mismatch (argument 2)

Und hier die Zeilen

//include y_utils.inc
stock GetIP(playerid)
{ //(420) : error 021: symbol already defined: "GetIP"
new
ip[16];
GetPlayerIp(playerid, ip, sizeof (ip));
new
ipv = strval(ip) << 24,
pos = 0;
while (pos < 15 && ip[pos++] != '.') {}
ipv += strval(ip[pos]) << 16;
while (pos < 15 && ip[pos++] != '.') {}
ipv += strval(ip[pos]) << 8;
while (pos < 15 && ip[pos++] != '.') {}
ipv += strval(ip[pos]);
return ipv; //(433) : error 079: inconsistent return types (array & non-array)
}
//Gamemode
#define Function%0(%1) forward%0(%1); public%0(%1) //so hab ich es definiert
Function OnPlayerLogin(playerid,password[]) //(22549) : error 025: function heading differs from prototype
{
....
}
OnPlayerLogin(playerid,inputtext); //(60371) : error 035: argument type mismatch (argument 2)