Comment 10 for bug 902843

Yes, you are right. Both Windows and Mac failed to save this file as Optimized SVG.

No error message appeared to me on both machines. It gives me an "wait" cursor as it is saving and after some time (a minute or maybe more) it returns to my drawing as if it has saved the file, but the target folder has no file saved.

I don't have Python installed on Windows to test on command line. I have to install to test.

On Mac Inkscape.app folder I found lxml and numpy on 2.6 folder

$ pwd
/Applications/Inkscape.app/Contents/Resources/python/site-packages/i386/2.6
$ ls
lxml numpy

I also have an Inkscape installed via Macports (installed it on last week), but I'm not using it because it crashes on some random situations.

$ inkscape -V
Inkscape 0.48.2 r9819 (Dec 9 2011)