https://dl.dropbox.com/u/39112055/run.sve (https://dl.dropbox.com/u/39112055/run.sve)
Using the above save with Simutrans 111.2.1 Experimental 10.17 with pak128.Britain-Ex 0.8.3
When I try to upgrade the whole section of road/ or any part of the road from (99,111,0) to (104,110,0) with City Road from Map Editing Tools of Public Service, the game always crash.
Thank you very much for the report - found and fixed on the 10.x branch, and will be incorporated into the next release.