To view a document, Adobe Acrobat Reader and it's plug-ins need to be installed properly on your computer.
Attention: PDF complete or PDF Architect are not supported
Ensure that you have indeed installed Adobe Acrobat Reader and the plug-ins needed.
- Install Adobe Acrobat Reader http://get.adobe.com/reader/
- Install Plug-ins/Add-on
Internet Explorer: Open PDF directly in Reader or Acrobat (quick fix)
Attention: Apple Mac users must also have Acrobat Reader installed.