m0useanswered grow question a year ago I have yet to have this bug with the site.
I agree making a new diary and deleting the old one once its all up and running is an option.
I would also try a different browser with any and all plugins disabled to see if it will work. Or just try removing the week that's erroring out and then recreating it.
When I originally read the question title of Bug Diary I thought this was going to be a pest issue like gnats or thrips, This is indeed something different.
I always keep my diary images for about a year before deleting them encase I need to reference them. Just toss em all in a folder called old grows. I have only need to use it once, but when I did need it it was a life saver. Granted I only save the pics and do not bother with the text or data inputs for the diary. I guess I could start to save that information but just seems a bit extra.
Good Luck!