Looks like it's more than a Pretendo issue. Ask in discord.gg/nintendohomebrew (ofc mention you need to keep these two options enabled for Pretendo as they will ofc advice you to disable them)
#3ds crash on boot with "enable loading external firm and modules" and "enable game patching" as true
pulsar sonnet
misty spoke
Rehid is crashing
Delete /luma/titles/0004013000001D02, /luma/titles/0004013000003302, /luma/sysmodules/0004013000001D02.cxi and /luma/sysmodules/0004013000003302 from your SD card
pulsar sonnet
Rehid is crashing
Delete /luma/titles/0004013000001D02, /luma/titles/00040130000...
oh wow