Even though I have checked "Automatically open all supported TIFF's" in Camera RAw Preferences - My tiff files do not open up in camera RAW What is the problem?

Question

Even though I have checked "Automatically open all supported TIFF's" in Camera RAw Preferences - My tiff files do not open up in camera RAW. How can I correct the problem?

Answer 1

What kind of TIFFs?  Are they multi-layered, for instance?  ACR will not open layered files.
Due to the current unavailability of clairvoyants and mind-readers in the forum, we respectfully request you supply sensible, complete details.
BOILERPLATE TEXT:
Note that because this is boilerplate text, not all points may apply to any given, specific poster.
If you give complete and detailed information about your setup and the issue at hand,
such as your platform (Mac or Win),
exact versions of your OS, of Photoshop (not just "CS6", but something like CS6v.13.0.6) and of Bridge,
your settings in Photoshop > Preference > Performance
the type of file you were working on,
machine specs, such as total installed RAM, scratch file HDs, total available HD space, video card specs, including total VRAM installed,
what troubleshooting steps you have taken so far,
what error message(s) you receive,
if having issues opening raw files also the exact camera make and model that generated them,
if you're having printing issues, indicate the exact make and model of your printer, paper size, image dimensions in pixels (so many pixels wide by so many pixels high). if going through a RIP, specify that too.
etc.,
someone may be able to help you (not necessarily this poster).
a screen shot of your settings or of the image could be very helpful too.
Please read this FAQ for advice on how to ask your questions correctly for quicker and better answers:
http://forums.adobe.com/thread/419981?tstart=0
Thanks!