KAG Map Making Thingy I Don't Understand

There has been a problem to me that keeps happening to me and I get very outraged at the fact that this happens sometimes and not at other times.

My problem...
I currently use Paint.NET (don't hate on me, I don't care if you don't like it, I do) to edit all of the sprites and maps of KAG. But the problem is that on this one map I am making called StandPoint apparently loads only the bedrock and nothing else. And as I have told you, this has happened to me ALOT, even in KAG alpha.

The map looks like this:


And here is what I get when I load the map:

Could someone please tell me what I'm doing wrong?

BTW, I have tried loading it in almost every gamemode. So that is no use. And I have all the block colors right too, so don't bug me about that either. And I have also tried connecting the land forms with background dirt.

 

Where are the air/sky blocks? You should begin every map by filling in your whole canvas with air blocks. Use this palette: https://forum.kag2d.com/attachments/beta_palette_build963-png.29698/

Note the "Sky" block in top left corner.

 

Ahhhhhhhhhhhhhhhh...... Wow... was I really that stupid... I frequently use the air block too...
I am such a forgetful person

Thank you

--- Double Post Merged, Dec 10, 2013, Original Post Date: Dec 10, 2013 ---

Everyone who has a problem with map making should look at this first to see if they are following this one... simple... rule...

Don't follow in my footsteps and make air!