(hey, this one is a genuine bug - I'm not just making work for you :))
1. Set the items of a "List of Items" to be: some,things (with no newline on the end)
2. Set the list separator to be comma
3. Save the project, close, reload.
4. There is now an extra newline on the end.
This has probably always been like that, but "skip blank entries" ignored it when the separator was a newline. But with a comma separator, now the newline gets tacked onto the last entry, causing some really confusing error messages. In my case, a "check file exists" failed because it was looking for a file with a newline on the end...
Debatable whether "skip blank entries" should skip newlines when the separator is a comma...probably not (the way it is now).
Steve