x264.exe crashes when making an MP4 movie; VideoPad usually follows

[mowdownjoe]

So, I've been making a few videos through FRAPS and editing them through VideoPad (after converting them once, due to VideoPad still crashing when it works with FRAPS videos). My monitor is not widescreen, but rather runs at a native resolution of 1024×768. Until recently, I've been making my videos at 720p. Recently, though, I've been hitting the "Detect" button so it makes the video in the resolution of the source videos. But that has been crashing x264.exe, which I assume is the Windows 7 64-bit native h.264 codec. It seems to be a pretty repeatable problem, and I just tried encoding that same video in 720p and it worked fine. So... what's going on? Does it not like that resolution?