LPATCH.EXE is not something I am aware of.  It's obvious that English is not your native language, so maybe it is something specific to your locale.  Can you connect to Sony's servers and play a character?  That's the only requirement these days for connecting to the latest EQEMu.
There's a post in the Tutorial section that explains how to connect: 
http://forums.eqemu.net/viewtopic.php?t=9649.