I just changed a bunch of site pages on a domain from html to php and as I fired up Yummy there was an update that was duly installed. Afterwards I uploaded all the changes and everything seemed fine.
It occurred to me afterwards that I should add a 301 redirect to the .htaccess file, so I fired up Yummy again and went into preferences to show invisible items on the server, but nothing appeared after refreshing, so I checked the option to force show all items. Again nothing.
I quit Yummy, started it again and in the preferences those items I had just ticked were deselected now. Tried this three times with the same result. In a nutshell I can't make invisible files visible, since this latest update today.
NB I know for sure this was working a couple days ago with the previous version of Yummy.