Robert. If you'll spend about ten minutes here on the Forum, You will see all of the grief that 4.16.xx is giving members. I'm sure that it's a small percentage when looking at the full picture, but it is always nice to give the option to go back to an older version if one so desires. Crazy?? I think not. Everyones setup is different, so as you said "new version SHOULD work for everybody" is in fact the Crazy statement here.

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I Don't Suffer From Insanity, I Enjoy Every Minute of it