Reporter: banoffee
[Submitted to the original trac issue database at 8.15pm, Wednesday, 6th July 2011]

I've been caught out by this several times - usually when I've got a bunch of unsaved changes :(

I've managed to get a reliable (for me) set of steps to reproduce, even if it's not a minimal test case:

1. Load potlatch.
2. Draw a new closed way.
3. From the presets menu, select "Transport" section, and "Car Parking".
4. Click 'Advanced' at bottom. Then 'Add' for a key
5. Type 'access', 'perm', select "permissive" from auto-complete menu.
6. Press 'Add' again, type 'name',
   (at this point, there is a key called 'name' with no value)
7. Click where it says 'name', (e.g. to try and change to a different key such as 'operator')

Expected result: focus changes to key name, allowing this to be changed.

Actual result: Potlatch crashes, losing any work done since last save.

(undoubtedly there are other triggers, as I've stumbled into similar potlatch crashes several times, but the above steps did it every time for me from a fresh start)