I had LRcc 2015 1.1 on Macbook Pro. Did not update to ver 2.0 because of large numbers of crashes others had. When ver 3.0 came out Creative Cloud said LR was up-to-date. I tried to download directly from Adobe but update was not successful giving an error code of U44M2P7. I uninstalled ver 1.1 and reinstalled ver 0.0. That version works well but now I'm unable to reinstall any of the subsequent version updates, including ver 1.1 which I had on before. Instead I receive the same U44M2P7 error code. I'm at a loss of what to do next.