I'm having the same issue, I uninstalled EQ because I was playing on a different server. re-installed then followed the steps. my error file says:
UIErrorLog created at Fri Jun 20 14:45:53 2014 [Fri Jun 20 14:45:53 2014] Warning: file EQLSUI.xml not found in directory UIFiles\default\. Attempting to use file from Default skin. [Fri Jun 20 14:45:53 2014] Couldn't open or read UIFiles\default\EQLSUI.xml [Fri Jun 20 14:45:53 2014] Error reading XML. [Fri Jun 20 14:45:53 2014] Error loading skin: loading default skin instead. [Fri Jun 20 14:45:53 2014] Warning: file EQLSUI.xml not found in directory UIFiles\default\. Attempting to use file from Default skin. [Fri Jun 20 14:45:53 2014] Couldn't open or read UIFiles\default\EQLSUI.xml [Fri Jun 20 14:45:53 2014] Error reading XML.
I figured out my problem! Once I set eqgame.exe and the THF patcher to "Run as Administrator" it worked(right click on icon-->properties-->compatability-->settings-->run this program as an administrator). I feel like a such a newb . I thought I had my entire windows login/account set as Administrator but I guess not. Damn you Windows8!