Lost work, not saved

[manyrains]

After working all day on a project that included programming a lot of midi, Pro Tools closed unexpectedly. While I know better, but am not yet in the habit, I hadn't "manually saved" for quite a while. I have the backup set for every 2 minutes. I lost several hours of work. I assumed that backup evert 2 minutes would mean I wouldn't have lost anything. Am I missing something?

Also, when I went back to work on the project, the MIDI tracks have weird drop outs in them I can't figure out. It's like I recorded some automation without realizing it, but I can't figure it out. If I delete a not a write another one it still won't sound. I've looked a tvolume, velocity, etc, not seeing anything.
I'd appreciate any thoughts on how I could get back to where I was before the crash, or how to figure out whats affecting those midi tracks.
Thanks