ASP

Cannot see the error messages in IIS

 You can configure these settings by using IIS Manager. To do so, open IIS Manager and navigate to the site or application where you want to enable or disable script messages, and then double-click the ASP feature.

 In the list of ASP features, configure the Script Error Message and Send Errors To Browser options.

Ref: http://learn.iis.net/page.aspx/564/classic-asp-script-error-messages-no-longer-shown-in-web-browser-by-default/

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Cannot create automation object - Issue caused by the eware.dll not being registered correctly

Instruction to manually swap in a new eware.dll

   #Stop the IIS server.
   #Backup the existing CRM eWare.dll and database, rename the eWare.dll file.
   #Copy the interim patch eWare.dll to the CRM directory.
   #Register the new eWare.dll by using regsvr32.exe.e.g. regsvr32 "C:\Program Files\Sage\CRM\\WWWRoot\eWare.dll"
   #Restart the IIS server. 

Ref: https://community.sagecrm.com/partner_community/b/hints_tips_and_tricks/archive/2008/02/06/patches-and-service-packs-and-registering-the-eware-dll.aspx