I'm trying to figure out this during my trial thing. So far I'm not having too many problems.
Issue 1: Sometimes I'll type in my password and hit enter to launch. It accepts my password and then closes that first screen to launch the lotroclient. Althought lotroclient.exe IS running, it never actually appears (for example all the ads and going to character loading screen). Note: I am trying to run 6 clients. This issue usually happens at the 3rd-6th client.
Issue 2: Sometimes a member on my team will crash and I'll try and launch their slot again. The console in Innerspace shows that the client was successfully launched, however nothing happens and nothing is shown running in Windows Task Manager.
I didn't find the right solution from the Internet.