I am having the same problem. Neither icons nor preview images show up. In addition, when I upload the image, I can see it initially under the “Preview Image” section of the edit page, but once I go away from that page, then come back to it, I no longer see the preview image, but instead a link that says: previewRemovePreviewImage. I’m attaching a screenshot of what I am seeing. The URL for this package is: HERE. Is there a fix for this?