CorelDRAW X3 C# ASP .NET COM class factory Factory Error

Hello,

I am writing a web application in C# and ASP .NET. I have added a reference to the the CorelDRAW X3 .tlb and am doing conversion of uploaded .cdr image files to .png and .pdf for display on the web.

This all works fairly well when the application runs in the VS debugger, but when I push the application out to a production webserver I get the following errors:

Retrieving the COM class factory for component with CLSID {4A110001-2109-4B5D-BC63-17AE8914E384} failed due to the following error: 80070005.

Retrieving the COM class factory for component with CLSID {4A110001-2109-4B5D-BC63-17AE8914E384} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

I granted permissions to the web user (IUSR) in IIS 7.5 using the DCOM Config tool in Component services and got it working for a bit on my development webserver, but then I made some changes and am having trouble again. I cannot seem to get this working on the production server which uses a newer version of plesk.

Does anyone have insight into how to troubleshoot this issue?

Thanks!