So basically none of my custom NSP work, like the HBMenu NSP or Mario 64. It just shows an error. Every other (not homebrew) NSP works fine, and sigpatches are updated as far as I know. Any ideas? Lastest FW and Atmosphere.

Hello, have you checked to see if you're launching the CFW directly from Hekate using Main Menu>Launch>Sys/EmuNAND (CFW)? If yes, then the sigpatches you're using are probably not compatible with Hekate. Perhaps try copying the Atmosphere fusee_primary.bin folder to the Hekate payloads folder on the SD card and then launch that file from Hekate>Payloads instead, and see if that works?
Ay, hello there and sorry for being so random, buut if possible could you please update the files from this post u made about BL2 on the Vita some years ago?Yep, it was the Sigpatches that didn't work with Hekate. For some reason I thought I downloaded those and I did not. My bad completely. Thanks.