08-27-2018, 12:12 PM
Yes, there is a plugin to load/save each image type. But the plugin is not in your profile, it is part of the Gimp installation tree.
In your test, all the attempts save to some GimpTest directory, the problem could be with that directory. Can you create a file in it in the file explorer (New>text document or somesuch)?
In your test, all the attempts save to some GimpTest directory, the problem could be with that directory. Can you create a file in it in the file explorer (New>text document or somesuch)?