Unfortunately UPnP is still not working for me in VLC 2.1.5 (Win7 SP1, both under 32 and 64 bit versions). Clicking "Universal Plug 'n Play" causes VLC to crash.
While previous installs (2.1.0 - 2.1.2) automatically opened the crash report option, this does not happen after (repeated) crashes in 2.1.3 and 2.1.5 after clicking UPnP.
For me, VLC 2.0.8 is the last version in which UPnP detection works properly.