I've run out of patience. I did manage to get my PM imported to My Watchlist (I snuck in before they took down PM). It continued to give me "some transactions are erroneous" (or whatever the message is) with no indication of which ones are in error. With all the problems people are having, I just don't trust the data. On top of that, My Watchlist is worthless as a portfolio tracker. What a waste of time.
So, I deleted all My Watchlists and moved to Morningstar - not as good as PM, but it'll do. I hate losing my transaction history, but it's all available on my broker's site.
Best of luck to all.