Most likely the issue is that you have more than one asset listed in the assets/depreciation section, and you are not allocating your sales price across those assets properly. If you sold at a gain, then you *MUST* show a gain and every single asset. Likewise, if you sold at a loss then you must show a loss on every single asset. Doesn't matter if that loss/gain is only $1 on some assets either.
When you show a gain on some assets and loss on others, the TurboTax program *CAN* *NOT* handle it correctly - particularly with the 4797 and the SCH D.
Take note that you need to allocate your sales price across all depreciable assets. So since land is not depreciated, you will not allocate whatever your land sales price is. You will only allocate your structure sales price across other depreciated assets.
