Minim Watch doesn't display the log

[NickP]

I'm using Minim 0.72, on a QNap 419PII, recently upgraded from 0.70.
MinimServer is correctly creating the log the specified folder with the specified filename.
When I select "Show log" (Minim Watch on a Win7 Pro PC, not recently updated) a window titled "Music log" opens, but with no visible contents. When I "Save as", the resulting file is zero size.
I can open the log in its native area, but it's not paginated and so isn't helpful.
For me, this is new behaviour; I could save the log fine when using 0.70.

N