NOT VS_VSIX_INSTALLER_PATH AND VS2015_VSIX_INSTALLER_PATH NOT VS_VSIX_INSTALLER_PATH AND VWD2015_VSIX_INSTALL_ROOT NOT VS_VSIX_INSTALLER_PATH AND VS2013_VSIX_INSTALLER_PATH NOT VS_VSIX_INSTALLER_PATH AND VWD2013_VSIX_INSTALL_ROOT NOT VS_VSIX_INSTALLER_PATH AND VS2012_VSIX_INSTALLER_PATH NOT VS_VSIX_INSTALLER_PATH AND VWD2012_VSIX_INSTALL_ROOT NOT VS_VSIX_INSTALLER_PATH AND VS2010_VSIX_INSTALLER_PATH