We moved to email, but the next version of MangoNoSql, 3.5.1, will improve the handling of corruption in the database that is to be merged. This is what caused the buffer overflow exception at the end of the log, and the returning to IDLE state before finishing all the data points.
Sorry I keep pasting the entire file within the post, if there's a better way to share it please let me know.
Tis better to log the whole log than no log at all!