... and a couple of months passed, while I'm working on other projects, and I'm back to this one:
I registered the COM object with the Administrator privileges per your note of March 16.
I have an ASP page in our development site with, among others things the line:
Set oConvPDF = Server.CreateObject("PDF2Image.CPDF2Image")
The only elements before this line are a couple of variables being initialized with strings.
Executing on a Windows 2008 R2 64 bit machine running IIS 7 returns:
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Server object error 'ASP 0178 : 80070005'
Server.CreateObject Access Error
/Vita40Test/TestPDF2Image.asp, line 12
The call to Server.CreateObject failed while checking permissions. Access is denied to this object.
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where line 12 is the line invoking the CreateObject. The sample code you provided didn't include the "Server." call. Without it I got:
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Microsoft VBScript runtime error '800a0046'
Permission denied: 'CreateObject'
/Vita40Test/TestPDF2Image.asp, line 12
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I have set read/execute permissions for IUSR and IIS_IUSRS on both PDF2ImageCOM.exe and pdf2image.dll.
The folders where the sample pdf resides and where I'm telling it to write has read/write permissions for IUSR and IIS_IUSRS and other utilities read and write in those spaces ... using tmp ... routinely.
Other clues?
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You need give full control permission to Everyone user account to "PDF2Image.CPDF2Image" DCOM, please refer to following web page to more information,
http://www.verydoc.com/doc-to-any-faq.html
VeryPDF