Thanks to everyone for their responses

Charlie:
The auto render function was already off but I tried unlinking/relinking the model as per your suggestion. It's possible to add new Pages with different model views but LO crashes if I attempt to open one of the original Pages.

tim:
I recall a number of posts dealing with different crash situations but am not aware of a description of how to check the LO file. I'll do some searching.

mavie:
Thanks for pointing out the relevant topics. I'll follow up with Google support and see if they can salvage anything from the file.

Up to this point I found SU/LO to be a pretty effective combination for simple construction drawings. Obviously there are still some stability issues and LO needs to be more robust but hopefully it won't evolve into a bloated quasi- Revit.

A 16MB LO 2.1 file with 5 Pages comprised of house plans, sections and elevations worked fine until a recent model update. Now every attempt to change a Page results in a crash. The model was created in SU 7 Pro using OSX 10.4.11. Any suggests for overcoming this problem would be greatly appreciated. The drawings were fairly developed with dimensions, notes and rendering so the prospect of losing all the work is pretty discouraging. If I'm forced to redraw everything and I use LO, I'll create single Page drawings to reduce the risk of Page-related crashes.