title: EclipsePydev 4.4.0+ tkinter debugging Error
body: <p>In the past 1.5 year I have developed a quite big code using Python 2.7.8 (Anaconda accelerate) and Tkinter with quite some satisfaction. I have being using Eclipse Luna + pydev and everything was running smooth. Then some time ago I have performed (my error) an update and I have updated pydev, since then the debugger stack and bug consistently. I'll try to be more specific: in my code a main window open a second window that runs a chunk of code using <code>threading</code> python library (in order to still have the window active); now when I debug this portion of the code a strange small TK window appears  and the debugger stacks.
  I have tried to upgrade to Eclipse Mars but I get the same error....I believe due to pydev.</p>