Quote Originally Posted by MarkusTay View Post
On pg.10 of the tutorial, at the very bottom of the first column of text (after figure 26), you say "Add the Rivers Mask layer mask to the Arctic layer." In the next step you have us adding a black layer mask to the 2 desert layers and the arctic layer. You can't add a mask to a layer that already has a mask (at least, its not letting me do so with GIMP 2.8 ).

What am I supposed to do at this point?

Also, are we supposed to just leave all the channels 'on' all the time? They are not applied to anything unless associated with a layer, correct?

Thanks again.

EDIT: P.S. - It was gradient issue... plus a couple of other things (like my map being over-all too dark). I had to REALLY finagle the gradients to get them to work with the extremely dark palette, but I think it came out okay.
Hey sorry for not getting back to you on this Markus I just checked in on the tutorial here and saw that I had missed a string of your questions (thanks to everyone else out there who was much more helpful than I was).

As to your first question, that was an oversight on my part (I'll have to amend the tutorial). You'll have to "apply" the layer mask on the arctic layer (and any other previous climate areas) before adding a new layer mask.

As to the channels, no, you'll want to hide these. Keeping unhidden may be part of the reason your map is so dark. The purpose of the channels is twofold, for use as layer maps and for use as a selection device. Other than that they should remain hidden. Anyway I'll be gone for much of the weekend but if you have any further questions I'll try to respond to them early next week.

Cheers,
-arsheesh