I’ve been struggling to resolve some odd infrequent problems with LibreOffice crashing for about a year now. The problems were not fixed by uninstalling and deleting my user profile as well as many other suggestions that had resolved similar issues for other users. The worst part was how usually the attempts would appear to help but it was always just a perception not a reality.
A couple of weeks ago I upgraded my NAS to a QNAP TS-231 and the problems got worse. I tried a whole bunch of things to fix the problems and nothing really worked. Yesterday the problems got severe enough (trashed ODB file) and repeatable enough that I decided to take some time to research them carefully.
It turns out at least some of the various problems were actually caused by the LibreOffice Windows Explorer Extension which had been a problem for me twice before since 2012. The solution is to simply remove the Explorer Extension as shown in my 2012 post. Now that this feature has caused me major problems for a third time I’m going to have to remember and recommend that whenever installing LibreOffice on a PC that will access files from a *nix based NAS, use the custom option when installing and avoid the Windows Explorer Extension like the plague.