upgrading to MultiBit 5.18 and getting an unknown password

[gpguy94114]

After upgrading to MB 5.18 one of my wallets has an unknown password.  Since there are no "hash" marks or asterisks I am not even sure how many characters there are...  I have restarted 5 times with no improvement, tried all of my passwords, even my 256 bit password, with no good results.  Is there anyway of "deleting" said unknown password?  Or finding whatever it may be?
Any and all help will be tremendously appreciated..

[allgoodthings1]

Yipes, my friend. You need to post about your problem in only one topic thread. All the regular forum visitors with answers make their rounds to every thread with a new post, to see if it's one they can help with. Just one post is all that's necessary to get the right person's attention. It doesn't help to post the same thing in four different threads. If anything, it rather off-putting and may turn away some eyes that would otherwise be disposed to help.  ..Just saying.