[GNC] GnuCash 3.0-1 on Mac OS X 10.13.4: can't parse user file

[Anthony Dardis]

First, many many thanks for this great program! Have been using it for 
years.

3.0-1 installed on my machine, opened, looks beautiful, can navigate 
around in my file. Saved the file, closed program. On reopening, GnuCash 
reported that it couldn't parse user file. I tried opening my file using 
2.6.19 and got the same (or a very similar) message. So I restored the 
file from a backup and have gone back to 2.6.19.

--Tony