I got an error on a new MiKTeX 2.9 win7 64-bit install while running the luaotfload tool.
luaotfload | Updating the font names database: luaotfload | Font names database not found, generating new one. This can take several minutes; please be patient. luaotfload | Updating the font names database: <omitted> The network name cannot be found. Data: \\MiKTeX\]MPM[\fonts\opentype
The error is very cryptic and is very similar to
Unfortunatly that topic was unanswered. However, I dug a little deeper and found the real cause. The $OPENTYPEFONTS path in MikTex is set to (among other things) '%R\fonts\opentype//'
Now I checked expanding this path using
and I get the same error. But if I use a small letter r
it works perfectly fine.
How do I make kpsewhich case-insensitive or update the $OPENTYPEFONTS variable to have a small %r