I'm also having problems with Resolve. I'm not familiar with this program, so I'm probably doing something wrong. I put the CUBE file from the ColorCorrect tool into the "C:\ProgramData\Blackmagic Design\DaVinci Resolve\Support\LUT" folder. It shows up in the list of LUTs in the program, but when I select it I get the same error as DoomBot, "Missing Look Up Table". I also am unable to get the LUT to work in After Effects. Same error as before: "Unable to apply LUT from selected file".
Is someone able to write a short guide on how to go from the ColorCorrect tool to applying a LUT in Resolve? As I say, I'm new to this program, so everything I've worked out so far has just been by trial and error.