Issues executing an activeX dll created in vb 6.0, from an asp.net application

I don't think I mentioned that it is a COM server, but a cOM object. its an application like excel with a COM interface. If your familiar with OPC the com object is an opc server. If you are not familiar with opc then don't worry about it. The fact that its an opc server is irrelevant.

Its similiar to using com to open up excel. In this case the activex dll is supposed to open up an application. The error returned is visual basic error  code 5.

I am not sure about the other machine you ask for, I mentioned that everything is on the same machine

What perplexes me is that the error is not returned in debug mode

asp.net page

 Dim opc As New BuildLogicOPC.ISILogicOPCConnection
opc = CreateObject("BuildLogicOPC.ISILogicOPCConnection")
 opc.getValues(ilkPrefix, fifoPrefix, valid.eliminateNullString(formula.ServerName).Trim)

entire dll application written in vb 6:

Option Base 0

'Initialize Schenider OPC Objects
Dim grp1 As New SAOFSGRPXLib.SAOFSGroupX

'Declare Error Handling Properties
Public ErrCode As Variant
Public ErrSource As String
Public ErrDesc As String

'Declare Return Variables/Properties
Public Quality As Variant
Private IlkValues(16) As Variant
Private FifoValues(16) As Variant
Public Property Get InterlockValues(index As Integer) As Variant
        InterlockValues = IlkValues(index)
End Property
Public Property Get FifoAllValues(index As Integer) As Variant
        FifoAllValues = FifoValues(index)
End Property

'Retrieve Data
Sub getValues(InterlockDesc As String, FifoDesc As String, ServerName As String)
Dim codePointer As String
codePointer = ""
ErrCode = 0
ErrSource = ""
ErrDesc = ""
On Error GoTo ErrorHandler
'---------------------------------------------------------
codePointer = "Connecting to OPC server: " + ServerName
'---------------------------------------------------------
 grp1.Init "Schneider-Aut.OFS", ServerName

For x = 0 To 15
    '------------------------------------------------------------------------------------------------
    codePointer = "Adding Interlock Items To Group - Desc: " + InterlockDesc + " - index: " + CStr(x)
    '------------------------------------------------------------------------------------------------
    grp1.AddItem "", InterlockDesc + "." + CStr(x)
    '------------------------------------------------------------------------------------------------
    codePointer = "Adding Fifo Items To Group - Fifo: " + FifoDesc + " - index: " + CStr(x)
    '------------------------------------------------------------------------------------------------
    grp1.AddItem "", FifoDesc + "." + CStr(x)
Next x
'----------------------------------------------------------------------
codePointer = "Reading all items: " + FifoDesc + " ; " + InterlockDesc
'----------------------------------------------------------------------
grp1.Read
For x = 0 To 15
    '-------------------------------------------------------------------------
    codePointer = "Storing Interlock Values: " + InterlockDesc + "." + CStr(x)
    '-------------------------------------------------------------------------
    IlkValues(x) = grp1.GetValue(InterlockDesc + "." + CStr(x))
    '-------------------------------------------------------------------------
    codePointer = "Storing Fifo Values: " + FifoDesc + "." + CStr(x)
    '-------------------------------------------------------------------------
    FifoValues(x) = grp1.GetValue(FifoDesc + "." + CStr(x))
Next x
'-------------------------------------------------------------------------
codePointer = "Storing Quality Reading"
'-------------------------------------------------------------------------
Quality = grp1.GetQuality(InterlockDesc + ".0")
Set grp1 = Nothing
Exit Sub
ErrorHandler:
'----------------------------------------------------------------------
'Calling subroutine will be able to read following error parameters
'---------------------------------------------------------------------
    ErrCode = Err.Number
    ErrSource = codePointer
    ErrDesc = Err.Description '+ " ; " + grp1.GetErrorString(0, CLng(txtError.Text))
    Set grp1 = Nothing
End Sub


debugging information (written to an .html file from the asp.net application) of parameters sent to dll:

Reading OPC Values; fifoprefix = A_601API004_L!_615_HK_6303B_HMIL.FIFOVER --- ilkprefix = A_601API004_L!_615_HK_6303B_HMIL.STATVER

error returned by dll:
Connecting to OPC server: WIN2K3NETDEL;Unable to start the server  
error code 5

As you can see all parameters were passed to the dll by the asp.net app  and none of them were null values

as indicated above, the following is the error returned by the .dll:
error returned by dll:
Connecting to OPC server: WIN2K3NETDEL;Unable to start the server  
error code 5

WIN2K3NETDEL is the server name. Hence the .dll does know what it is. Sorry for the confusion

note: I have tried the following cod In a windows app created in vb.net:

Dim opc As New BuildLogicOPC.ISILogicOPCConnection
opc = CreateObject("BuildLogicOPC.ISILogicOPCConnection")
 opc.getValues(ilkPrefix, fifoPrefix, valid.eliminateNullString(formula.ServerName).Trim)

I published and installed the application with the line of code above, and I can establish the proper connections to my OPC Server. Hence its a problem unique to asp.net

is there a setting in IIS that will solve the issue? i am using there is a difference between the web development engine(or whatever iis settings visual studio uses when debugging) and IIS

thank you for all of your help, your persistence in helping me led me to conlcude that it was a security issue.

Ah ha. So it was permissions from the iis account, explaining why it would work when you ran it interactively.

Good news.