title: version conflict for package "Tk": have 8.5.2, need exactly 8.5.15
body: <p>I am trying to compile a program (python2.7) but no matter what I do I keep getting this error:</p>
  
  <pre><code>C:/Python27/tcl/tk8.5/tk.tcl: version conflict for package "Tk": have 8.5.2, need exactly 8.5.15
  version conflict for package "Tk": have 8.5.2, need exactly 8.5.15
  while executing
  "package require -exact Tk  8.5.15"
      (file "C:/Python27/tcl/tk8.5/tk.tcl" line 18)
      invoked from within
  "source C:/Python27/tcl/tk8.5/tk.tcl"
      ("uplevel" body line 1)
      invoked from within
  "uplevel #0 [list source $file]"
  </code></pre>
  
  <p>This probably means that tk wasn't installed properly.</p>
  
  <p>Can someone please explain to me what's the problem here?</p>