Thank you! I've been tearing my hair out trying to figure out what was going on with SH3D. I'm running the current App Store build on a 2015 3.3 GHz Core i7 iMac with 16 GB RAM. I was running MacOS 10.14.6 until a couple of weeks ago when I finally bit the bullet and changed to Monterrey 12.6.1. SH3D suddenly stopped importing anything; instead locking up until I force-quit it. Disabling BTT for SH3D immediately solved the problem. Thanks again for the tip!