I have replied to your reply to a comment I made on your YT channel. I have downloaded the R7 build and it too crashed on a .gif export.
Ubuntu 64 bit. Crash on .gif export using 64 bit R6 and R7 build, as well as the steam build.
*side note, how do I change my forum display name? I do not want my email to be so public, and I was never given an option to change it.