Sometimes, the images don't render properly. Either it's "blank," or all you see is the file name like this:
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Not sure why, but there are a couple of ways around it.
First, simply press the "Refresh" button on your browser, 1-2 times to see if it goes ahead and renders. If it doesn't, then try this:
1) Hit "Reply" to the post where the image isn't rendering. You should see the post quoted, but with a blank quote.
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2) At the above right of the edit bar, you'll see an icon just to the left of the "floppy disk..." a "square bracket"
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3) Click on that to toggle between "graphic" vs. "Textual" display of the BB code.
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4) Select everything between
IMG and
/IMG
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5) Copy and paste the above into the URL line of a separate browser tab and press enter. The result should render properly.
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6) Don't forget to "un-toggle" the BB-Code by repressing the bracket button.
It's a lot of work, admittedly, but if you really want to see the image...