Hi All,

I am really out of options here.

I have tried to follow every possible bug fix for this I can find. I have spent several hours looking for a solution.

In terminal I wrote this:
1) defaults write /Library/Preferences/com.apple.versioner.python Version 2.5
I also overwrote the python directory from an old version of Inkscape in the content of the .app. I created symbolic link, moved directories. I downloaded a patch and installed it. I installed a beta. I tried turning off my computer. I have done so much to my poor little machine I am worried I have seriously messed up some stuff.

I can get Inkscape to run, and I can get the extensions to run without the "lxml error", but nothing happens. The extensions don't actually do anything to the figure.

My wife has her PhD thesis due tomorrow and I am helping her make a figure. It is really important I get inkscape and it's extensions up and running ASAP.

I need your help.

System details:
Macbook Air 1.6GHz Core Duo, 64Bit, 10.6.5

See my answers to your comments in the bug report:
Summary:

1. What is discussed in the bug report is not intended as workarounds for users but to find out the actual cause and develop/commit a solution so that Inkscape extensions run out-of-the-box on all supported Mac OS X versions.
2. If you are trying to modify a linked or embedded raster (aka bitmap) graphic, 'Extensions > Color > Grayscale' can't work (and that's not a bug). Use a filter effect, or investigate if you can get a similar effect using one of the 'Raster' extensions (which are based on ImageMagick)

NathanOrloff wrote:1) defaults write /Library/Preferences/com.apple.versioner.python Version 2.5

I'd strongly recommend to undo this change: it limits your usage of python system-wide to the 32-bit Python 2.5.1 - not something you want, usually. The solution that will be included in Inkscape 0.48.1 only affects python processes launched from within Inkscape.

NathanOrloff wrote:I also overwrote the python directory from an old version of Inkscape in the content of the .app. I created symbolic link, moved directories. I downloaded a patch and installed it. I installed a beta. I tried turning off my computer. I have done so much to my poor little machine I am worried I have seriously messed up some stuff.

See above - undo as much as possible of whatever you did. Wait for Inkscape 0.48.1 or use a current (unstable) development snapshot (it works without needing any changes to your system).

NathanOrloff wrote:My wife has her PhD thesis due tomorrow and I am helping her make a figure.

You could attach a sample SVG here - with objects that fail to convert to grayscale even when using a recent development snapshot - so that it can be investigated and tested on other systems in order to help you find a solution.