Hello,
Go to Tools in your Internet Explorer windows then go to Internet Options. Click on the Advanced tab. You will find a section called Security. Enable “Allow active content to run in files on My Computer” and restart your browser then see if the window still appears.
The variables for the image Height and Width can be found under the Camera section of the Variables drawer.
Height: {height} or {h}
Width: {width} or {w}
-Brandon