I have been using Samba to open office files .xls, .doc, .txt with LO on my windows XP machine for years but now when I select the file in file manager LO does not load or give any error message. This is happening on two machines one running PcLinuxOS Mate 64 and the other LMDE Mate 64.
I have also a 32bit machine on the network which works fine with the same files.
I have installed Gnumeric and Abiword software and all files will open successfully with them.
Version 4.1.2 just terminates when opening "smb://" path in 64-bit Linux for me too.
I can't reproduce with LMDE MATE 64-bit fully updated, MATE desktop 1.6, LibreOffice 220.127.116.11. Tried with and without 'gvfs-fuse' package installed. Please make sure your installation is up to date, and you have 'gvfs-backends' and 'libreoffice-gnome' packages installed. If you still have troubles, try to remove 'gvfs-fuse' package (or wait for your distribution to update to 4.1, which should ignore 'gvfs-fuse' mount).