fix in parts confirmed with Inkscape 0.47+devel r9361 (OS X 10.5.8)
Quick test: the bug as originally filed is fixed. However - as many other items - the extension doesn't deal with a resized/format-changed page: the calculated grid is inserted offset from the bounding box of the selected object - or from the current page margins (if no object is selected).
more generally: the extension misplaces the grid if the selected object/inserted grid is inside a transformed group.
fix in parts confirmed with Inkscape 0.47+devel r9361 (OS X 10.5.8)
Quick test: the bug as originally filed is fixed. However - as many other items - the extension doesn't deal with a resized/ format- changed page: the calculated grid is inserted offset from the bounding box of the selected object - or from the current page margins (if no object is selected).
more generally: the extension misplaces the grid if the selected object/inserted grid is inside a transformed group.