ERROR/CRASH when creating/merging Letters under "Mailing"

[dezeptorian]

Already have a file with an existing "List" on another Word document (done as expected, with insert table and filling in all fields/records/registers) with it already loaded as the designated database for recipients; as I start the process by going into MAILING > Selecting LETTERS under START MAIL MERGE > then go ahead and finish up by clicking over the far right on FINISH & MERGE, choose EDIT INDIVIDUAL DOCUMENTS > SELECT ALL. What happens afterwards is that I do get a new Document with all the different copies of the letters I wanted, but I CANNOT save them anywhere on my computer given that when I try to do so, Word just crashes and reboots ending up right where I started, leaving me empty handed of the merged copies.

Has anyone experienced the same problem?
Any tips/help you can provide?
Is it just me, failure in the installation/validation process?

Let me know, I need this for work.