Hi @lbutlr, some tips:
sometimes (not often, but sometimes) it crashes
I’m using LaunchBar for many years and I know, sometimes it dies silently. But on my machine this happens maybe once every couple of weeks.
Since you are considering a hefty check interval of 30 seconds, I assume that LaunchBar dies much more frequently on your machine. This is definitely not “normal” and I would rather investigate the problem than building a relaunch macro.
or gets quit accidentally
In LaunchBar’s Preferences > Shortcuts you can set it to quit only on ⌥⌘Q (instead of ⌘Q). This should help.
or it goes into “Not responding” mode
The main thing that causes trouble for LaunchBar is an overcrowded index. Do not try to index everything with LaunchBar, you have Spotlight for that.
If not already done, thin out the index and try to reduce the amount of indexed files and folders to something less than 10000 items (currently I have about 5000, and this is still more than it could be if further optimized). Also disable iTunes indexing if you don’t need it, and similar stuff.
Indeed, it will take an hour or two to build a compact and meaningful index, but LaunchBar will thank you by being very snappy and responsive and – above all – CPU usage (energy consumption) will be greatly reduced, which is essential when you are on a notebook.