Conceal 1 (Source)

A Ranger with the /conceal skill can turn off his own conceal. Just target nothing and use /conceal. It doesn't help your group but it does solve the problem for the Ranger. And it will fix the maskscent and conceal not working on a new planet even if you forget to do it before you leave the planet. What I meant by double checking my maskscent is that it lets you make sure that the conceal bug hasn't happened. If you can use /maskscent to turn off maskscent then conceal (and maskscent) will work fine. If you can't disable /maskscent using /maskscent then you are bugged (and can use /conceal with nothing targetted to fix it).