MultiTerm 2017 Termbase files failed to open

 Hello,

I cannot open or create any termbase in MultiTerm 2017 following a recent update. The following error messages are received:
On opening an existing termbase: "This termbase cannot be opened because it has been created with an unsupported version of MultiTerm."
I have had no problem using them before and I didn't make any change to the files.
On creating a termbase: "MultiTerm is unable to create the termbase in a unsupported version of MultiTerm."
My OS is Win 10, and latest updates installed (MultiTerm 2017 SR1-14.1.2441.0). I've also reinstalled both MultiTerm and Trados - to no avail.
Any help is greatly appreciated!
Wei