Error Loading AcroFill.api when updating Adobe Acrobat Reader

I have a Windows Vista Home Premium PC. While I am trying to install the latest version of Adobe Acrobat Reader, I end up with an error message: "Error loading AcroFill.api!! Adobe Acrobat Reader has encountered a problem and must be shut down. We apologize for the inconvenience." Please help me resolve the issue. Thank you.
