I didn't see a thread on this already (and I did do a search) so just a quick question... is there any official errata on the Master Thief career?

The front of the career says Advanced Career Any race but the back of the sheet says Advanced career Human

Given that the basic thief career is Human, Dwarf, High Elf or Wood Elf I would guess the front of the card (any race) is correct but I just wondered if I'd missed anything official.

Nothing official that I know, but your reasoning is sound so I say go with that. You could check the official errata though under the Support tab.

Official errata doesn't mention this career but my guess is it's a typo. I would allow any race than be a Thief to be a Master Thief as well. Makes perfect sense.