"BTW I reopened the bug as part of it is not fixed in branch - adding a column still crashes and I presume the other similar cases do to."
Would you believe I forgot to "make install" ? It's fixed :D However there is a remaining issue that the cursor moves in a weird manner when adding columns (I haven't tested very much, probably other cases). The cursor can visibly move twice and then end up somewhere other than where it started.. which isn't the expected behaviour when adding a column. I have also seen a multiple element selection (three in a row) appear for no reason during the above process. This might be considered a separate bug. Anyone confirm? I can file another report if needed. Have fun, Darren