I have version 4.70.5. I get no errors running this code. Here's the output from Explore:
               -----Original Message-----
From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of goldwing01_1999
Sent: Monday, November 28, 2005 04:40
To: amibroker@xxxxxxxxxxxxxxx
Subject:
 [amibroker] Help with old code from DT
       function IIR2( input, f0, f1, f2 )
         result[ 0 ] = input[ 0 ];
       result[ 1 ] =
 input[ 1 ];//<---- getting error
       for( i = 2; i < BarCount; i++ )
           result[ i ] = f0 * input[ i ] + 
               C1=Foreign("^VIX","C");C1=C;
     RED=IIR2( C1, 0.2, 1.4, -0.6 );
     k=0.6;// Optimize("k",0.6,0.1,2,0.1);
     LINE=IIR2(C1,0.2-0.01*K,1.4+0.01*K,-0.6);
         E1=Equity(1,0);dd=40;MA1=MA(E1,dd);
     tb=100*Cum(E1<MA(E1,dd))/Cum(1);
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