Hi Brendan
Just tried importing again and it did work!
One thing I noticed. I updated our expired licenses for the Calendar Pro and Importer yesterday. I expected that import counter (which our license limits to 100) would be reset as a result of license renewal, but it did not appear to be so, said 0 out of 0 available. I have a feeling there is something amiss in the renewal process. Might be something you’d need to pay attention to.