Client letter tax amount not editable - Jan 2021 update

I am using the Jan 2021 version of Jazzit, so I’m not sure if this bug has been fixed since…
In the client letter, the corporate tax payable amount shows up in the related paragraph, but if you want to override it, the pop-up says you can (see screenshot). But when I double click, the options list opens, and I get an error - see below.


I updated Jazzit to the April 2021 version, and this seems to be fixed. All good now!