Re: the problem - a quick "burp" administered to the system (complete shutdown & restart) fixed things, at least so far.
I plan on coming back up to ask about installation instructions once I have all the files downloaded. So far I've got all the mesh files OBIO mentioned in his upgrade tutorial - RF's 5, 7, and 8 level meshes plus the JIT 10 level meshes and West Coast mesh set as well. Concentrating now on all other files. Downloading them into one folder, then scan for viruses & malware, then come back for advice on how and in what order to install.