Dear readers,

I have build an add-in for our Enterprise PDM setup. We use it with Inventor. On releasing files, I want this add-in to export pdf files for all drawings in the release batch.

I got this add-in to work, but it only seems to work once. The next time I run it, I get an error stating that:

"Call to method 'OnCmd' in add-in 'ExportPFFiles', written by company 'Intralox' failed. Error cod = 0x080131603 (Unknown error 0x80131603).

But at some point, this error message will not show, and I will be able to run it once again. I don't know where or when this reset happens.

I also sometimes get an error message about the RPC server being unavailable.

I have no idea where this is going wrong, and I am hoping that somebody can point me in a direction of what can be causing these errors.

I am using Visual C#.

This is how I started my code:

using System;

using System.IO;

//using System.Windows.Forms;

using System.Collections.Generic;

using System.Text;

using EdmLib;

using Inventor;

namespace ExportPDFFiles

{

    public class Addin : IEdmAddIn5

    {

        public Inventor.Application oApp;

        public Inventor.AssemblyDocument oAssyDoc;

        public void GetAddInInfo(ref EdmAddInInfo poInfo, IEdmVault5 vault, IEdmCmdMgr5 cmdMgr)

        {

            poInfo.mbsAddInName = "ExportPDFFiles";

            poInfo.mbsCompany = "Intralox";

            poInfo.mbsDescription = "Exports all .pdf files that are related to the assembly on which this add-in is executed";

            poInfo.mlAddInVersion = 1;

            poInfo.mlRequiredVersionMajor = 5;

            poInfo.mlRequiredVersionMinor = 2;

            //This add-in is reached through a hook. Everytime a file passed to a new state, this add-in is called.

            cmdMgr.AddHook(EdmCmdType.EdmCmd_PostState);

        }

        public void OnCmd(ref EdmCmd edmCmd, ref Array data)

        {

            try

            {

                if (data == null)

                    return;

                //Get the current vault

                IEdmVault11 vault = (IEdmVault11)edmCmd.mpoVault;

                Boolean bFilesPDFHandled = false;

                // this doesn't do much. Everytime the sequence is here, it is called by the poststate trigger / hook

                if (edmCmd.meCmdType == EdmCmdType.EdmCmd_PostState)

               And so forth