Cannot preview or render a Crystal Report on production machine

Question

My dev machine is Win 7, Sql Express 2008, VS 2008, CR 10 (CR engine 15.5.3700). I am able to successfully preview the report in VS as well as get it rendered in an ASP.NET page.
However, after the web app was deployed to a Win 2003 machine, Sql Exterprise 2008, (with VS 2008/CR 10 and same CR engine), I got the following error in the ASP.NET page:
Exception Details: System.UnauthorizedAccessException: Retrieving the COM class factory for component with CLSID {5FF57840-5172-4482-9CA3-541C7878AE0F} failed due to the following error: 80070005.
I did everything suggested on all web pages on Google search for this error: Granted full control permissions to User as well as Windows Temporary directory to "Everyone" account, uninstalled and reinstalled the Crystal Reports 2008 merge module.
Then, I tried something different altogether. I opened the report in VS 2008, and clicked the Preview button on the bottom of the page. After filling in the parameters, I got the infamous "The Visual Basic UFL that implements this function is missing or U2lcom.dll" error. Again tried everything a Google search threw up for this error, including trying to register U2lcom.dll manually using regsrv32 (which failed saying no entry path found), giving full control to everyone on "C:\Program Files\Business Objects\Common\2.8\bin", and searching BusinessObjects for CR 10 UFLs (which I was unable to find).
Now, having done all this, I lastly reverted to forums for help. So, any ideas or pointers to the problem resolution would be appreciated.

Answer 1

Then, I have some Name Not found errors on Query Open & RegEnumValue operations:
39:32.3     w3wp.exe     2588     QueryOpen     C:\Program Files\Business Objects\Common\2.8\bin\ClientDoc_RES_xx.DLL     NAME NOT FOUND
39:32.3     w3wp.exe     2588     QueryOpen     C:\Program Files\Business Objects\Common\2.8\bin\ClientDoc_RES_xx.DLL     NAME NOT FOUND
39:32.3     w3wp.exe     2588     QueryOpen     C:\Program Files\Business Objects\Common\2.8\bin\ClientDoc_RES_ENU.DLL     NAME NOT FOUND
39:32.3     w3wp.exe     2588     QueryOpen     C:\Program Files\Business Objects\Common\2.8\bin\RptControllers_RES_xx.DLL     NAME NOT FOUND
39:32.3     w3wp.exe     2588     QueryOpen     C:\Program Files\Business Objects\Common\2.8\bin\DTSAGENTD_RES_xx.DLL     NAME NOT FOUND
39:32.3     w3wp.exe     2588     QueryOpen     C:\Program Files\Business Objects\Common\2.8\bin\SAXmlSerialize_RES_xx.DLL     NAME NOT FOUND
39:32.3     w3wp.exe     2588     CreateFile     C:\Program Files\Business Objects\Common\2.8\bin\objectfactory.dll.2.Config     NAME NOT FOUND     Desired Access: Generic Read/Execute, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: n/a, ShareMode: Read, AllocationSize: n/a
39:32.4     w3wp.exe     2588     RegEnumValue     HKLM\SOFTWARE\Business Objects\10.5\Report Application Server\Server     NO MORE ENTRIES     Index: 30, Length: 220
39:32.4     w3wp.exe     2588     RegEnumValue     HKLM\SOFTWARE\Business Objects\10.5\Report Application Server\InProcServer     NO MORE ENTRIES     Index: 30, Length: 220
39:32.4     w3wp.exe     2588     RegOpenKey     HKU\S-1-5-20\Software\Business Objects\10.5\Report Application Server\InProcServer     NAME NOT FOUND
Finally, more Access Denied errors for QueryOpen & CreateFile operations:
33:40.8     w3wp.exe     2588     QueryOpen     C:\Program Files\Microsoft SQL Server\90\Shared\instapi.dll     ACCESS DENIED
33:40.8     w3wp.exe     2588     CreateFile     C:\Program Files\Microsoft SQL Server\90\Shared\instapi.dll     ACCESS DENIED     Desired Access: Execute/Traverse, Synchronize, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: n/a, ShareMode: Read, Delete, AllocationSize: n/a
33:40.8     w3wp.exe     2588     QueryOpen     C:\Program Files\Microsoft SQL Server\90\Shared\instapi.dll     ACCESS DENIED
33:40.8     w3wp.exe     2588     CreateFile     C:\Program Files\Microsoft SQL Server\90\Shared\instapi.dll     ACCESS DENIED     Desired Access: Read Data/List Directory, Execute/Traverse, Synchronize, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: n/a, ShareMode: Read, Delete, AllocationSize: n/a