Yes, PMB (Pando) was dropped by EVERYBODY -- Two items 1- Pando as a company was "bought out" last year. 2- about 2 months ago a major security issue was discovered with PMB and EVERYBODY stopped using it.
I don't know how to update a CrossTie file and Codeweavers themselves no longer support LOTRO since the Mac Client became available.
Theoretically, the current download at LOTRO.com "should work," but I don't know.
I haven't tried the PC download, however, the Mac Download, uses the HappyCloud interface but the data source is the Akamai cloud.
The Mac Client, by the way, does work "well." It has a problem for many people in that it has a MTBF (crash to desktop) of about 45-60 minutes. Apparently because of a memory leak in the client.
Otherwise, the client has no problems. Check out the Mac Technical Support Forum at the main LOTRO forums (lotro.com) down at the bottom.
Also see: http://lotro-wiki.com/index.php/Mac_Client
for more information. It really needs to be "cleaned up," but I just haven't gotten around to it.
One last point. PyLotRO is no longer needed as the actual Turbine Launcher does now work in WINE. However, PyLotRO does still work.