On her machine, SWMBO had with a frowning and grumpy visage forbidden the updating of Calibre from 3.nn to 4.nn until the thing with the Viewer had been resolved.
I showed her my updated to 4.30 and she was okay with it, so I updated her Calibre, sat with her to get the configs just right, and now she's a happy wife.
If she's happy I'm happy...
So... relating to my previous post... I'm now doubly happy.
Ax