The image in the widget is not showing (broken)m probably because of the name, when I look this, the src part of the img tag is like this:
src=".../wp-content/plugins/easy-instagram/cache/2_standard_resolution-250x250.l"
If I browse to this, I get a 404, if I change to ..."2_standard_resolution-250x250.jpg" it works.
The plugin is updated, ver 1.9.5