As I can see, DTA cannot define window from which to grab links:
17:44:40::730
load(): Error: TypeError: window.arguments is undefined
>Source Frame (error) :: chrome://dta/content/dta/select.js :: TypeError :: line: 289
>JS frame :: chrome://dta/content/dta/select.xul :: onload :: line 1
>native frame :: <unknown filename> :: <TOP_LEVEL> :: line 0
17:44:48::904
Downloadfile: Error: TypeError: this._notifications is undefined
>Source Frame (error) :: chrome://dta/content/dta/select.js :: TypeError :: line: 364
>JS frame :: chrome://dta/content/dta/select.xul :: oncommand :: line 1
>native frame :: <unknown filename> :: <TOP_LEVEL> :: line 0
(The same would be with addurl.xul which was dropped by me in favor of select.xul)
So I should say that DTA isn't compatible with KM for now. (and wasn't really compatible with old releases as it cannot do its main job - batch grab of all links from the page)