the error still shows

when i made 1 DVD9 the installation was perfect
but when i made 2 x DVD5 i got this error
extraction setting parts is Ok
[ExtractSettings]
FreeArcFile1={src}\Data1.cab;DestDir:{app};Disk:1
FreeArcFile2={src}\Data2.cab;DestDir:{app};Disk:2
i dont know where is the probleme