ThisComponent does not work when debuggin a macro in the Basic IDE, if this
macro is NOT located inside a document, that is, it is located in one of the
user's libraries:

 * open a Writer document
 * open the Basic IDE
 * write a macro in any of the USER's libraries (NOT the document's) like
 	Sub Main
 		oDoc = ThisComponent.CurrentController
 	End Sub
 
In previous versions, you could run this macro in/from the IDE.
ThisComponent will point to the Writer doc. 

NOW it returns null and trying to get the current controller throws an
exception. To get a valid reference you have to run the "outer"-macro from the
Writer doc's Tools - Macro - Run macro... menu.

IIRC ThisComponent could also get a NOT NULL reference to the BasicIDE module,
if it was the only component in the Desktop, now it does not.