title: PDFCreator COM interop with different versions
body: <p>I need to connect to <code>PDFCreator COM interface</code> from C# application. For this purpose, I use VS generated Interop wrappers. But some clients have different version of PDFCreator (I have 1.2.1, some have 1.4.3) and if I use Interop generated for 1.2.1 I get exception when using the wrapper. Is there any way around this? So my app can support multiple versions of PDFCreator? </p>
  
  <p>Also, I am not sure wheather PDFCreator interface actually changed. Isn´t there some lock on exact version of COM object, I could simple turn off while generating Interop libraries? Thank you.</p>