Using 3.5.5 on Linux.
nicholas@leonhartsberger:~/VASSAL/modules$ uname -a
Linux leonhartsberger 4.19.0-8-amd64 #1 SMP Debian 4.19.98-1+deb10u1 (2020-04-27) x86_64 GNU/Linux
A couple of times now I have tried to load a new module and the splash image never finishes loading. However I mean the dialog listing the files as they are being loaded just sits there. When I finally give up, everything seems fine.