'Only PNG images are supported in assistant messages' functionality not supported.
Cannot continue chat with nano banana pro.
See attached:

Probably because the generated image is saved as jpeg?
Expected to feed the generated image back for more iterations. Or the ability to reference any images along the chat for reference.
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Comments4
Daniel Nguyen
Jan 15
Hey. I’ve fixed this in v2.6.0. Can you confirm?
Daniel Nguyen
Jan 6
Progress Update: I’m still working on this. Dang, I thought it was a simple fix. Turns out the Google API is kinda crazy with strict requirements (png file type - but they generate jpg files, must send huge thought signature back etc)
Sorry for the issue. Does it happen with nano banana model (not pro)?
resting
Jan 7
Weird, seems like with nano banana (non pro). Why is that? Non pro doesn’t need PNG in follow up messages?
Daniel Nguyen
Jan 14
I’ve found a solution and will release a new version soon!