1.7.8 will not install

[Weatherby]

I keep getting a notice about a new version and when I close vortex I get a message about updating the program... but then it pops up an error and says it can not update try again later. I tried to download the installer from the Nexus links and it goes so far and then says something about can not automatically close vortex, close it manually and retry. There IS no copy of Vortex running at that time, and nothing allows the installer to progress. The version I have installed at the moment is 1.7.4. Can anyone help with this issue?