Sounds like something messed up in the Price History for one of your securities. You might go to Investing/Portfolio/Show Holdings and adjust the date to see if there are anomalies. Perhaps one of your securities has a price of 0.00 for 1/1/2017. If so, edit the price history for the affected security.
Transfers between accounts seem to totally hose the investment activity report. I consolidated some IRA's into one account, did Quicken's transfer process and now my investment activity report is useless.