1) that happens because the OFW update to v12 has updated the gamecard slot firmware. You cannot use the gamecard slot in CFW before you update your emuMMC to v12. If you want to avoid the crash you can disable the gamecard slot by adding nogc = 1 to BCT.ini
2) & 3) I am not sure but it might be because you use wrong version of sigpatches. They need to match both the version of HOS and ATM. If you get the sigpatches from either ITotalJustice or eXhumer they are for HOS 12.0 and ATM 0.19 but you are on HOS 11.0.1 & ATM 0.19
1) Nice, thanks for the explanation. Appreciate the info!