The second extension - outline2svg - also does not load unless the <check> tag is commented out. Again nothing in the extension-errors log for that one either.
So - there are two issues: 1. the ubuntu package needs a dependency on libsvg-perl, and 2. something is not working correctly in Inkscape's handling of the <check> tag.
IMO this bug would be fixed by addressing #1 and a separate bug should be opened against Inkscape for #2.
Commenting out that line (<check> tag) allows the extension to load on linux (Ubuntu 10.04).
As noted above a quick search only turns up 2 extensions using that tag:
/opt/inkscape- 0.48/share/ inkscape/ extensions$ grep -RHin "<check" . "extensions" >txt2svg. pl</check> inx:15: <check reldir= "extensions" >outline2svg. pl</check>
./txt2svg.inx:15: <check reldir=
./outline2svg.
The second extension - outline2svg - also does not load unless the <check> tag is commented out. Again nothing in the extension-errors log for that one either.
So - there are two issues: 1. the ubuntu package needs a dependency on libsvg-perl, and 2. something is not working correctly in Inkscape's handling of the <check> tag.
IMO this bug would be fixed by addressing #1 and a separate bug should be opened against Inkscape for #2.