There have been some discussions about problems with the native player erasing single pixel borders and such. For example: http://www.wargear.net/games/player/200548?player=native vs http://www.wargear.net/games/player/200548?player=flash

I've been wondering what is causing it because I use single pixel borders in all of my maps with no problems. I just started a new prototype with some simple graphics on a single layer. Voila! It has the same problem. Each of the boards that I have seen mentioned with problems are also single layer boards.

So, for single pixel things just use dual layer. The single pixel will be erased on the fill layer, but will be drawn back on in the board image.

Battle of Bladensburg has single pixel borders that work fine: http://www.wargear.net/games/player/469252

This is a good fix. I should update my old single-layer boards!