I get this message when trying to save Inkscape files in the .dfx format. The system then says it recovers but the files are unusable.

Runtime Error! Program: C:\Windows\SysWOW64\pythonw.exe

Then it says something about being asked to terminate in an unusual way.
Next it supplies me with this information

Fatal Python error: Py_Initialize: can't initialize sys standard streams
File "D:\Program Files (x86)\Inkscape\python\Lib\encodings\__init__.py", line 123
raise CodecRegistryError,\
^
SyntaxError: invalid syntax

I've looked all over online for an answer. I don't think this is an Inkscape problem but, this has never happened on any other program. Also I updated Python to 3.3. It did this before and after I did the update.

I am trying to use the trace feature to help me input images into a Plasma Cam.

Thank you for considering my situation.

New info 06..16..13
The above was a result of leftover python 2.7 conflicting with python 3.3. I removed both of the versions by searching the C: drive for anything labeled python.
3.3 comes with an uninstaller, 2.7 had to be deleted manually, then I reinstalled 3.3. Problem solved.