Hi,
I downloaded the svg logo from https://www.debian.org/logos/
(https://www.debian.org/logos/openlogo-nd.svg) and inkscape could not
open it:
jimmy@smoke ~/flag % inkscape openlogo-nd.svg
/home/jimmy/flag/openlogo-nd.svg:18: namespace warning : xmlns: URI
&ns_svg; is not absolute
xmlns="&ns_svg;" xmlns:xlink="&ns_xlink;"
xmlns:a="http://ns.adobe.com/AdobeSV
^
/home/jimmy/flag/openlogo-nd.svg:22: namespace warning : xmlns: URI
&ns_vars; is not absolute
<variableSets xmlns="&ns_vars;">
^
/home/jimmy/flag/openlogo-nd.svg:25: namespace warning : xmlns: URI
&ns_custom; is not absolute
<v:sampleDataSets xmlns="&ns_custom;"
xmlns:v="&ns_vars;"></v:sampleDataSet
^
/home/jimmy/flag/openlogo-nd.svg:28: namespace warning : xmlns: URI
&ns_sfw; is not absolute
<sfw xmlns="&ns_sfw;">
I could open the one with the debian lettering so this may be a bug. I
used the one which is working so it's not affecting me but I wanted to
report it, in case it's a bug.