I just installed p3D v4.2. I noticed that I am getting a terrain.dll crash every time I launch a flight in one of the ORBX regions. I have not yet tried it outside of the ORBX regions. When using v4.1, I would get one of these terrain.dll crashes, but they were rare and I lived with it. After I installed v4.2, I deleted the object flow addon in the addons.xml file, then I lowered my cpu overclock from 5 ghz to 4.9 ghz. No more crashes. Not sure which one of those things helped. Has anyone noticed that there are more CTDs in v4.2 than in v4.1. Another question might be is v4.2 more sensitive to cpu overclocking than v4.1?