Hello John,
I've just tested your version locally.
First install I had this error :
Warning: Invalid argument supplied for foreach() in F:jtestlibrariesjoomladatabasedatabasemysql.php on line 678
I generate a "test" key, then launch Jadmin.exe, while selecting the .jkf file, double click, stay on the "define your joomla key" window...
Tried to uninstal, reinstall, no more error message, but same issue.
I've tested on a hosted online website, same issue.(first same error on instal, but all seems fine, then couldn't add the jkf file)
Do you have any clue why this is happening ?
If I left blank IP field into component, does that mean everybody can access or nobody ? (tried 127.0.0.1 as well, localhost was not saving, tried my local 192.168.0.1, same result...)
Thanks !