Conversion error for Help files

[Rudi Gaelzer]

Suddenly, an error is occurring whenever I try to render any one of the Help 
files (User Guide, Embedded Objects, etc) into PDF.
The error is related to conversion of images using inkscape.

This is the first error message:

An error occurred while running:
inkscape --file="2_usr_share_lyx_images_dialog-show-new-inset_graphics.svgz" 
--export-area-drawing --without-gui --export-
pdf="2_usr_share_lyx_images_dialog-show-new-inset_graphics.pdf"

Lots of similar error messages occur and I have to kill the process.

Any idea on what could be generating this error?  
-- 
Rudi Gaelzer
Institute of Physics
Federal University of Rio Grande do Sul
BRAZIL
Registered linux user # 153741