Lightroom 5.7 displays "no preview available" when attempting to download images from a rented Sony A7RII. I have no problem downloading images from my Sony A7R. Is this a problem with LR, Sony, or something else?
Lightroom 5.7 cannot import the RAW photos from a Sony A7RII
You need Lightroom 6.1.1/Lightroom CC 2015.1.1 or later. Either that or use the free Adobe DNG Converter to convert your RAWs to DNG and then import the DNGs into Lightroom 5.7
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