Is the new TB the same locale (e.g. en-US) as the old one?

Thanks for the suggestion, but from reading some other similar posts, I found that possibility, so checked it out. Still a sort of nightmare, but, fortunately, my old TB is still residing on the old smaller SSD, so boot to it and run TB there, but still scratching my head over the issue. The entire Profile was 259GB, so thinking I'd best I go back to the old TB and see what I can dump from unnecessary saved mail, such as Junk and deleted mail, and then very carefully try to copy it to the new disk, on which I'll install a new TB. A lot of work, but my current set up is really unusable. Hope someone can give the secret move to correct my dictionary problem before I have to go into this big cleanup and reinstalling task. Took me an entire nite just to copy over the Profile to the new disk from the old one. :-(

But thanks again!

Read also Profile-Moving article. Verify what Dictionaries do you have installed in Tbird Settings-Composition-Spelling? Do they match your language? Uncheck spell check as an option.

But clean your mail archive anyway.

259gb profile - that's a shocking size. Does it roughly match what your mail provider(s) say your total message sizes should be?

As for spell check, before doing anything drastic (for almost any problem not just spell check) you should be doing two things:

1. Help > Troubleshoot mode - does the problem reproduce
2. Check developer tools > error console for information relevant to the situation (in the case of spell check I would attempt a manual spell check - ctrl+shift+P on Windows)

Wayne, Thanks for your thinking on my issue. Until this problem, have never checked the size of my Profile, before, so have no idea if it is too big or not, but your statement "that's a shocking size." makes me think it is not a normal size, whatever normal might be (I have no idea, since no experience with Profile sizes or what's average . . .). My server is in my son's basement in a distant city, but I will call him about this and see if the 259GB seem about right . . . or not. 'Getting ready to try to set up TB all over again, I managed to clean out almost 9,000 emails, to see if that would reduce the size. Surprisingly, after this deletion, the size remained the same! Very puzzling to this non-techie. I will try your "Help> Troubleshoot mode - to see if the problem reproduces. Have never done that before, so thanks for that suggestion.

Unfortunately your technical language left me confused on your suggestion re checking developer tools, but will try to figure that one out, also tomorrow when I get some time.

Thanks again for your thoughts and ideas!

ric

The shortcut to Error Console is ctrl+shift+J

If the size did not reduce after deleting many messages, then two things to try: 1. right+click on trash folder and pick Empty Trash 2. In the account where you deleted messages, do File > Compact Folders (then check error console for any issues)

BTW, how are you measuring the size of your profile?