GIMP Version: 2.10.20
Operating System: Windows
OS Version: Windows 10 Pro
GIMP Experience: Basic Level

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Paint brush tool stopped working while this image is open.

I tried working in various layers of this image, and it logs the paintbrush as being used if I go to undo history, but i can't see anything (any paint). I've played with opacity, and made sure the layer I wanted was selected.

When I open a different image, it works and is visible.

Mode: RGB is selected.

Any help would be greatly appreciated. After a lot of work put in, I'm so close to being done with editing this image.

Finally figured out the issue after hours of frustration. Leaving this up in case it helps anyone.

I had something selected and didn't know it.

Select > None

Problem solved.

Everybody has made that mistake at least once in their lives. Glad you fixed it.

Yep. I tried to erase something once, not too long ago, and about lost my mind. Only to discover, I had some little selection area going that I didn't see. Funny thing was, GIMP was telling me what the problem was at the bottom of the screen, I just didn't pay attention to it.

@ mahvin - Funny thing was, GIMP was telling me what the problem was at the bottom of the screen, I just didn't pay attention to it.
Do we ever?
Maybe once we realise it's there for our benefit we do but I have been tripped up plenty of times ignoring the prompts Gimp is giving me

Geeze! Thank you SO Much. What a DUH. So happy to have found this post while I still had some hair left.

Thank you so much, moonandstarz! I was going crazy also, and I registered for this wonderful site just to thank you for saving my project. I am now selecting none religiously.