Enclose file name into quotes because of the spaces in the name.

m.loShell.Run( ["C:\PROGRAM FILES\AIMS\V20\SSREPORT.PDF"], 3, .T. )

>Why does the first code snippet work while the second one generates an error?
>

>Local loShell As Object
>
>m.loShell = Createobject( [WScript.Shell] )
>
>If Vartype( m.loShell ) == [O]
>
>	*-- Why does this code snippet work while the one below generates an error
>	If File( [C:\$DEV\AIMS\LIB\SSREPORT.PDF] )
>
>		m.loShell.Run( [C:\$DEV\AIMS\LIB\SSREPORT.PDF], 3, .T. )
>		
>	EndIf
>	
>	If file( [C:\PROGRAM FILES\AIMS\V20\SSREPORT.PDF] )
>
>		m.loShell.Run( [C:\PROGRAM FILES\AIMS\V20\SSREPORT.PDF], 3, .T. )
>		* OLE error code 0x80070002: The system cannot find the file specified.
>
>	EndIf
>	
>Endif