Please describe the problem in more detail. If there is an error message, please quote it word-for-word.
Which version of the OS are you using?
Which exact version of Lightroom are you using?
Raw or JPG file?
What steps are you taking?
What results are you getting?
Any error messages?
A screen shot might be helpful.
Using MAC OS X YOSEMITE
Lightroom version: CC 2015.1.1 [ 1032027 ]
NIKON D4 AND D700
I returns the error Some import operations were not performed, The following files were not imported because they could not be read (156)
This means that Lightroom ccouldn't ccopy the photos to the destination directory. You should determine what directory is specified in Lightroom's Import dialog box, it's on the right under Destination. Then You need to go into your operating system and change the permissions on this exact folder to WRITE permission.
That worked, not sure how it got changed thanks