I'm not aware of any installation of python. I have an LyX16 folder with a Python subfolder and an LyX 20 folder also with a python subfolder. The former contains python26.dll and python.exe. The latter contains python 27.dll, python.exe, and pythonw.exe.
The original error message, which referred to "python -tt" occurred while I was running LyX 1.6.7. When I switched to LyX 2.0.0 none of the error messages referred to python, but I still couldn't convert. Details in the string of messages between me and Richard Heck. Bill On Mon, Jun 20, 2011 at 8:31 PM, Julien Rioux <jri...@physics.utoronto.ca>wrote: > On 20/06/2011 12:10 PM, William Hanson wrote: > >> To all, >> >> I've been using LyX for a couple of years, but I'm far from expert. >> Suddenly I'm unable to update or view the DVI versions of my files. >> Clicking the dvi or PS icons brings an error message: "Cannot convert file >> An error occurred whilst running phython -tt" What should I do? >> >> Bill Hanson >> >> > Just one possible explanation of the failure: > > The python scripts shipped with LyX are not tested with all possible python > version, but they should work with the python installation shipped with LyX. > LyX installs its own python in a subfolder of Program Files/LyX. If you have > installed python separately, or another program has installed python, this > might conflict with LyX. > > -- > Julien > >