In reference to the patent: US20140338666
How come the images were taken off Google patents? Is this a bad sign?
Google just released an updated interface for their patent search. This is not the only patent currently affected by the glitch, so it is probably safe to assume it will be corrected in the coming days. It won't hurt to use the Send Feedback link at the bottom of their Patent Search page to increase their awareness of the problem.
In the meantime, the images are still available in the PDF and on several other sites, including the USPTO.
The link to PDFs of patents for patents issued around August 2015 and later remains broken. Try using ImmediateIP.com which has links to PDFs at the US Patent and Trademark Office.