My Amcrest webcam will not work with 10.29 either due to the authentication scheme they use now. A while back I worked with Brian and he built version 10.28 for me. It consists of 2 files, wdwebcamcapture and crongetipcam. If you would like to give them a try let me know and I will make them available, the zip file is 14.7MB and cannot be attached here.