Bringing this issue back from the grave. I've seen others having this same exact problem. My server has a max level of 100 (RoF2 client), and as a default PEQ DB, in-turn broke most melee combat skills. i.e. double attack, duel wield, and only showing languages on GM trainer.
Go into your rule_values table and under Character:SkillCapMaxLevel=-1, change the -1 to (in my case) 100. That will fix your skills issue
