I can't quite figure what I'm doing wrong here, or what it is that WordPress isn't liking...
I want to upload an image grab into a blog post. I used the free Mac app Grab, which I've never had problems with before, to size and select the screen grab I want. I saved three versions, as tiff, as jpg and as gif. I've tried adding each into a blog post / the gallery, but on each it won't upload and I get the error message, 'Sorry this file type is not permitted for security reasons'.
Any insights or suggestions?
The blog I need help with is lmighton.wordpress.com.