You may have installed it incorrrectly. Copy the new textures into the existing Flight Ontario folder, do not delete their folder and then replace it with ours. Doing that does cause CTDs.
This scenery also requires Michael Carr's Military Library, available here, https://www.flightsim.com/vbfs/fslib.php?do=copyright&fid=116841 Ken Lawson
Tom Gibson of California Classic has made emendations which mean that it works in FS9 and a lot of the people simming the 1940s and 1950s in Connies are using FS9. May we have this version uploaded please?