I actually seen your post the other day, but I assumed you'd figured out the problem since you'd found and liked my post.
If Priiloader isn't critical to your setup then I'd recommend uninstalling it until I release a new update. Otherwise...
No fucking idea. I went to play my switch and was sitting on a black screen with white text of the error I mentioned above. When I got it working it said I was on 18.x when I had no desire or any intention of updating past 17.x
FYI: Block your updates. Atmosphere automatically updated and I was on 18.x. (from proudly being on 17.x for good)
I checked the switch and it said "a fatal error occurred when running fusee unable to identify package 1"
I had no idea why it...
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi