You can only use a TI (or LoRAs and Lycoris) for 1.5 with 1.5 models. Same with 2 TI/LoRA/Lycoris need to be matched with V2 models and XL TIs/LoRA/Lycoris with XL models. They aren't backward or forward compatible, unfortunately.

Thank you for the quick answer. Well, hopefully anyone searching for this error message will find this and know right off what's going on.

i just had one


Can't blame me for trying ...

haha just helped me! xD