Anyone? Can anyone help?

I declare the DLL like this:

Private Declare Sub MYDLL Lib "C:\~\MYDLL.DLL " (<MarshalAs(Unm anagedType.Safe Array)> ByRef RUNAPTTARRAY() As String, <MarshalAs(Unma nagedType.SafeA rray)> ByRef RUNCONFIGARRAY( ) As String, <MarshalAs(Unma nagedType.SafeA rray)> ByRef RUNTEMPARRAY() As String, <MarshalAs(Unma nagedType.SafeA rray)> ByRef RUNWINDARRAY() As String, <MarshalAs(Unma nagedType.SafeA rray)>...

I call five Fortran DLLs through VB.net from an ASPX page over the internet. The first three DLLs I call run fine; however, the last two do not work. After running "net stop iisadmin /y" and then running "net start w3svc", I can then call three more of the DLLs (randomly selected), but the two remaining never work. These last two can be any two of the five. The first three DLLs that I call ALWAYS work and the last two never work....