I've not taken the time to narrow it down to a specific cause or causes yet. But I've run several scenarios in the past where there are multiple items listed in the assets section. TTX used to claim (and may still claim for all I know) that the program could "handle it" if you just showed the main property asset with all the sales data, and the other assets as sold for $0. I've found that to be flat out wrong.
When you show a gain on some assets and a loss on others, it totally screws up the SCH D and the 4797. It does the math all wrong and when I was running scenarios a few months ago the program never caught it's mistakes, because it didn't see any mistakes. You have depreciation recapture on the main structure reported sold at a gain, and no recapture on those assets sold at a loss for $0. I found it would catch the problem if one of those assets showed a prior 50% special depreciation allowance claim. But while the program would "catch" the error and not let you e-file, the message presented was cryptic and had nothing to do with the "real" problem.
It would be like if your car had a flat tire, and the check engine light came on. Huh? It was a real head scratcher when I was initially trying to understand the problem. Damn near scratched myself bald!
