I think… and hoping that this was related to the (fixed) issue(s) we were having awhile back with the extra LF’s and disapearing measurement files. 
Yes, it’s very confusing, everytime it pops up. With the wonderful work that you’re doing on the software, I just can’t express enough how important it is to do the weekly updates every week.
Just an update… @Grace was correct on the ME file with the missing date… I was looking for the file “measurements.smis”, but since I already had 7 other “measurements.smis” files it got renamed to “measurements(8).smis”, 
I may look at the schema for the ME files. I think currently some of the “personal” data is required to be a valid file per the schema. That’s why it was throwing the error for the missing date. I think we can change that so the personal data is not required as per the schema.
Yes, I totally agree with you. Not many people use this personal data, so it should be blank until it’s used. 