After a very frustrating couple of hours trying in vain to import an ordinary CSV file (the info comes in, but the Timeline will not load, or sometimes loads, but shows no events...), I have come to the conclusion that there is something seriously wrong.

I deleted all previous timelines and began again. I created a new timeline, and entered a single event, one with just a start date. This appears normally. But when I try to enter MORE events, they are saved, but fail to appear at all. I have tried clearing the site cache, etc. But now, I am truly stuck.

Suggestions?