The RoR patch needs two passes.
The first pass tends to hang or otherwise fail.
Basically, it is patching itself, (patchclient.dll) and the Windows Client will normally restart on its own.
Simply quit PyLotRO, and restart it.
It should check how far it has gone, and pick-up where it left off.
Time is "iffy" -- we're in a "landrush" so the patch server is swamped and that also causes issues.
I started about 9 am... and finished sometime around 8pm!!!
I basically "let it run" from 9 till about 6pm, then aborted and re-started PyLotro and about 2 hours later it was done.
Of course, after the patching is complete... the client still does not run.
There is a WINE patch, but it is for WINE 1.5.15 -- Crossover is only at WINE 1.4.1, so I don't know if it is possible to make the same patch to that level and have it work, or if other issues will crop-up.
It is also not obvious that the WINE patch "fixes everything." It does allow the game to launch, but reports are starting to surface that it still fails after running a bit.