Ah, good idea DJ,
If there is any kind of error it may not allow you to save the report.
Another issue is in R2 we may have had a limit to the length of the SQL in a Command.
Try removing all of the Comments as a test and see if that allows you to save it. The Designer UI may allow you to add but when saving it is going to complain, in this case it simply won't allow you to save the report. ( Maybe ) R2 is end
Doing a character count in Word it show 16,011. It may be too long... I don't know what version we extended it in but original would have been 32K ( divided in half for UNICODE characters ) so may be the limit.
Also, I tried pasting in you SQL and CR XI R2 did not like any of the comment text
Don