You can find your spine.log file here:
<user home folder>\Spine\spine.log
It's very strange the problem is intermittent. There's got to be a trigger somewhere, it would help a lot if we can find it!
Are you using a network drive or file share? Windows is notorious for freezing when things go wrong with network mapped drives.
You can try deleting (or moving) your whole Spine user folder:
<user home folder>\Spine\
That contains your Spine settings and downloaded updates. Most settings are in prefs.json, so deleting (or moving) just that file may help. If so, we can dig into what settings in there may be the problem.
