Every time I open LR, "Lightroom encountered and error when reading from its preview cache and needs to quit". There's another thread someone started, and another person put their phone conversation with Adobe support on their outlining the steps to fix this issue. However, that is not working for me. Please help!
Open the folder that contains your Lightroom catalog and locate another folder with the extension .lrdata and delete it. Then restart Lightroom. Lightroom should restart and will begin building a new previews folder. You will be able to just continue working with Lightroom.