LR4 is not compatible with the Canon 70D raw files, right? I tried a bunch of things and could not get it to work. They were released with in a year of each other.
Support to this camera was added in Lightroom version 5.2.Refer Cameras supported by Adobe Camera Raw
Please update to a newer version Lightroom or convert your raw files to DNG to be able to import them. See Digital Negative (DNG), Adobe DNG Converter | Adobe Photoshop CC
Retrieving data ...