Greetings!
I believe that i'm having a similar issue as a few of the other people here. I have installed OPM-VO along with the newest version of OPM, Kopernicus, EVE, BoulderCo and Scatterer. And I do get the beautiful Gas giants! However, Tekto doesn't have any clouds.
These are the images of my Gamedata folder and my PoodsOPMVO folder!
I am on Windows 10 by the way.
Also, I have checked and double checked the mods to make sure that I have gotten the correct ones, so I'm positive that they are the newest ones.
I have also tried to completely uninstall the game and reinstall it, and ran it in DX9 (before the uinstall, the game ran in OpenGL) to no avail.
I have also tried using KSPRC_v0,5, and they actually did give me the beautiful clouds on Tekto, and the rest of the applicable planets. I would however prefer to use EVE because it puts less strain on my PC, (I get a bit too close to the 3,8 gigs of ram use, with KSPRC and the memory leaks).
Hope this makes any sense, And beautiful mod by the way!