Trying to install the tools, Beta7 or the just released Beta8, fails immediately after starting installation with no error code ("ended prematurely because of an error"). I activated verbose MSI logging but the log is not really helpful to me. Last lines of the log are these:
MSI (c) (84:54) [23:15:18:161]: Note: 1: 1708 MSI (c) (84:54) [23:15:18:161]: Note: 1: 2205 2: 3: Error MSI (c) (84:54) [23:15:18:161]: Note: 1: 2228 2: 3: Error 4: SELECT `Message` FROM `Error` WHERE `Error` = 1708 MSI (c) (84:54) [23:15:18:161]: Note: 1: 2205 2: 3: Error MSI (c) (84:54) [23:15:18:161]: Note: 1: 2228 2: 3: Error 4: SELECT `Message` FROM `Error` WHERE `Error` = 1709 MSI (c) (84:54) [23:15:18:161]: Product: Microsoft ASP.NET and Web Tools 2015 (Beta8) - Visual Studio 2015 -- Installation failed. MSI (c) (84:54) [23:15:18:162]: Windows Installer installed the product. Product Name: Microsoft ASP.NET and Web Tools 2015 (Beta8) - Visual Studio 2015. Product Version: 14.0.61012.0. Product Language: 1033. Manufacturer: Microsoft Corporation. Installation success or error status: 1603. MSI (c) (84:54) [23:15:18:173]: Grabbed execution mutex. MSI (c) (84:54) [23:15:18:173]: Cleaning up uninstalled install packages, if any exist MSI (c) (84:54) [23:15:18:174]: MainEngineThread is returning 1603
DNVM is installed correctly as far as I can tell. I am running VS 2015 Community (with Web Developer Tools installed) on Windows 10.