Inkscape doesn't launch X11 itself anymore - it's a 'launchd' mechanism that kicks in whenever you start an application that needs X11.
to test:
1) quit X11
2) open terminal, type 'xlogo'
this should now start X11 and xlogo. The same is true for xterm, xman or GIMP - none of the applications themselves launch X11. Can you repeat the problem with any of these other X11 applications?
There is a related bug report (Leopard, Inkscape doesn't run if X11 is started as login item): Bug #398186 in Inkscape: “inkscape 0.47pre1 won't run for osx 10.5.7 and Xquartz 2.3.2”
Inkscape doesn't launch X11 itself anymore - it's a 'launchd' mechanism that kicks in whenever you start an application that needs X11.
to test:
1) quit X11
2) open terminal, type 'xlogo'
this should now start X11 and xlogo. The same is true for xterm, xman or GIMP - none of the applications themselves launch X11. Can you repeat the problem with any of these other X11 applications?
There is a related bug report (Leopard, Inkscape doesn't run if X11 is started as login item):
Bug #398186 in Inkscape: “inkscape 0.47pre1 won't run for osx 10.5.7 and Xquartz 2.3.2”