[BUG] Upgrade to 1.2.9 pops up message -"exchange" is not in the mnemonic...-

[carldex]

When trying to upgrade from 1.2.6 to 1.2.9 there is already a strange error, the current wallet is not automatically recognized...

When I try to enter the SEED again, when I finish and proceed, the message ("exchange" is not in the mnemonic dictionary; may be misspelle) appears, and I can't continue.
ps: EXCHANGE is one of the words of my SEED

I rebooted and tried again and got the same message.

I restarted and installed the old version 1.2.6 and automatically recognized the current Wallet and gave no error message...

I'm using the old version 1.2.6 as apparently one of my SEED words is not recognized by 1.2.9

---

Notebook Dell - Windows 10 x64