The vsdocman-5_5-patch.zip addresses the following:

- CHANGE: The cref link to a type in the same project/solution but in 
  different namespace doesn't have to be fully qualified anymore. VSdocman 
  resolves the full name with using/Imports statements.
- FIX: A link with Overload: or O: prefix in <seealso> tag pointed to a 
  random overloaded method instead of Overloads page. This worked fine 
  with <see> tag.
- FIX: Sometimes, the link to implemented or inherited interface or 
  class was broken in Syntax section. This could happen if the target 
  (implemented or inherited interface or class) was defined in the same 
  project/solution but in different namespace. Or the target was an 
  external type and VSdocman didn't resolve its full name because 
  sometimes it failed to read the using/Imports statements.
- FIX: In C#, if there were code elements with the same names but 
  different case (e.g. method1 and Method1), only the first one was 
  included in documentation.
- Improved performance.

To apply the patch:
1. Close VS.
2. Install version 5.5.
3. Unzip DLLs from vsdocman-5_5-patch.zip into VSdocman folder (rewrite old one). That's all.
4. Start VS and try.