Horizontal Tint showing up on photos only in lightroom

[ccannon@thegrove.cc]

Hello there, I shot photos this weekend and in preview the raws look clean but when i am in select mode in lightroom these horizontal tinted bars show up and then even when i import photos that appeared clean, more tints show up. what is lightroom doing and how can i fix it? 

some tints are more faint

[Jao vdL]

This looks like raw file corruption. What you see first is the jpeg preview that is built into the raw file. After a bit, or when you go into develop, Lightroom renders the actual raw data and only then would you see raw file corruption. Many programs only show you the jpeg preview and not the actual raw data so you wouldn't see this if you open the file in another program typically. This is usually caused by problems with the memory card in your camera, a bad USB cable or card reader, or sometimes corruption on your hard disk. This can be hard to trouble shoot. I recommend using a  different card reader to copy the files to your computer to test.