Don't want to hijack but how I did it.
This is how I rooted with no problems.
*install LG mobile update software (contains drivers needed for USB debugging) found in general post about check for updates failed.
*download and extract super one click root.
*open super one click root file and run root.
*if prompted agree to install all files (Super user and busybox is what it asked me to install)
Thats what I did and all well so hope it helps.