Blu-Ray authoring problems in Sony DVD Architect Studio 5.0

I've been having problems authoring a Blu-Ray disc for months now. I can't seem to solve my issues. Here are the details:

Canon XA-10 video camera shooting HD in 1920x1080 AVCHD at 29.97 fps.

Sony Vegas Movie Studio Platinum Suite 12 for editing (no problems editing)

Sony DVD Architect Studio 5.0 (latest update)

Pioneer internal Blu-Ray 15x burner

Shooting, importing, and editing are all fine. Rendering HD takes quite awhile, but I expected that. Rendering to the "right" format seems to be a problem for me. If I render to 1920x1080 Mpeg2, I get video and no sound in DVD Architect. If I render to 1920x1080 AVCHD, I get sound and no video. I think I've rendered in just about every format with no success authoring a Blu-Ray disc. I found one format (can't even remember what it was, I tried so many) that had both sound and video on DVD Architect, but it wouldn't burn. It re-rendered in DVDA for hours, then crashed (Status: StatusCodeTable.xml Err Status Code :[MUX_SN_E_IO]) and never burns. The burner works fine because I've backed up files on Blu-Ray discs.

I sure would appreciate it if someone could tell me what I'm doing wrong. Thank you in advance!

Curt