[y_thelastknight]

kostaskaraivalis You missed the Precomp part..

if not ISArcExtract ( 0, 25, ExpandConstant('{src}\data1.arc'), ExpandConstant('{app}'), '', false, '', ExpandConstant('{tmp}\arc.ini'), ExpandConstant('{app}'), False) then break;
if not ISPrecompExtract( 0, 25, ExpandConstant('{app}\data1.pcf'),    ExpandConstant('{app}\data1.srep'), true) then break;
if not ISSRepExtract ( 0, 25, ExpandConstant('{app}\data1.srep'),ExpandConstant('{app}\data1.arc'), true) then break;
if not ISArcExtract ( 0, 25, ExpandConstant('{app}\data1.arc'), ExpandConstant('{app}'), '', true, '', ExpandConstant('{tmp}\arc.ini'), ExpandConstant('{app}'), False) then break;