Have LR 4.1, CS6, Windows 7, use AdobeRGB1998, PSD, color managed with Eye one display 2, RAW images. Rarely take photos of red subjects, so have not seen this problem before now......wedding with 10 bridesmaids in "coral" dresses has uncovered a problem. Am seeing difference in red colors within LR, from the Library to the Develop mode/views they are different.. When saving PSD to the web as sRBG, colors of red are garrish, not at all true to the original PSD doc. Sending jpegs to Walgreens for my family shows very wrong colors, ranging from pink to orange to too-red. Anyone else having these problems?
Go into your develop panel and softproof one of these images for sRGB. Turn on the monitor and profile gamut warning. My guess is that the red color is outside both your monitor and sRGB. This will give rise to very large color shifts easily especially in highly saturated colors. The only thing you can do about it is to bring them back into gamut. There are many tutorials on the web on how to do this. One example is here: http://tv.adobe.com/watch/whats-new-in-lightroom-4/soft-proofing-image s
Or this excellent one from Andrew Rodney: http://digitaldog.net/files/LR4_softproof2.mov