Yep, read the thread below this one. The installer crashes when installing in certain directory, so you can download
http://yapb.bots-united.com/yapb2.arj, and install it manually, unil i've fix this problem.
About you crash (SZ_GetSpace?), it's appeared only in this version of yapb, no idea why... Maybe too much cvars (whistler?)
There is no waypoint for Airstrip? My mistake, will be added in next version.