PNG exporting as black box when it had been exported correctly before

[marigolden]

(12-02-2019, 07:15 PM)rich2005 Wrote: I think I know what is happening, goes back to an earlier post https://www.gimp-forum.net/Thread-How-to-merge-channels where you are
I'm doing a quick mask and kept "saving to channel" to make sure I wasn't losing anything..

Not the way to do it. Use a quickmask (or some other selection tool) to create a selection and save that selection as a channel.

Then you need to be aware of where you are If you export an image be on an active layer in the layers dock.

Channels can save individual selections and can combine (or subtract)  to restore at a later date, providing you SAVE as a Gimp .xcf file.

Not the best I have ever done but trying to explain here:   https://youtu.be/fftRiOUwxAc  Duration 4 and a half minutes  Hope it helps.

Wow you're the greatest! I will look at this closely later. For this one I ended up just going with my later version