Unable to set my profile picture

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So I am trying to set my profile picture. I made sure the picture i wanted to set was the right size, but it keeps saying "It must be an image"
What does that mean?
Because it is clearly an image, like with any I try and set.

Minor | DMS open | I love making friends

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@ftb It IS a jpeg tho?

Minor | DMS open | I love making friends