Hi all, I'm having trouble adding text through a callback onto a phase plot. I tried this code: pc.add_phase_sphere(r200[j],'kpc',["Density","Temperature","CellMassMsun"],weight = None) pc.set_zlim(1.0e-2,1.0e5) pc.set_xlim(1.0e-30,5.0e-19) pc.set_ylim(10.0,1.0e7) pc.plots[-1].modify["text"]([0.92,0.92],redshift_string) pc.save("output_%(file_num)s_branch_%yt-users@lists.spacepope.org(br)i" % {"file_num":fn,"axis":ax,"br":branch_index[j]}) And I get this error: Traceback (most recent call last): File "test_phase_plots.py", line 41, in <module> pc.save("output_%(file_num)s_branch_%(br)i" % {"file_num":fn,"axis":ax,"br":branch_index[j]}) File "/share/home/01112/tg803911/yt_17May2011/yt-x86_64/src/yt-hg/yt/visualization/plot_collection.py", line 157, in save override=override, force_save=force_save)) File "/share/home/01112/tg803911/yt_17May2011/yt-x86_64/src/yt-hg/yt/visualization/plot_types.py", line 108, in save_image self._redraw_image() File "/share/home/01112/tg803911/yt_17May2011/yt-x86_64/src/yt-hg/yt/visualization/plot_types.py", line 903, in _redraw_image self._run_callbacks() File "/share/home/01112/tg803911/yt_17May2011/yt-x86_64/src/yt-hg/yt/visualization/plot_types.py", line 800, in _run_callbacks cb(self) File "/share/home/01112/tg803911/yt_17May2011/yt-x86_64/src/yt-hg/yt/visualization/plot_modifications.py", line 910, in __call__ y = plot.image._A.shape[1] * self.pos[1] IndexError: tuple index out of range The error arises in the save command, but the problem only happens when I add the modify["text"] command. Any ideas? Christine