[Using A3 Launcher, i get this.]

Have you installed .NET Framework 4.5.1?  If not, you may want to do so.  If you have, then I would recommend that you head to the A3Launcher forums for additional support, as they are the creator of the app.

I have got that installed. Sorry i did not realize they had a forum. Thanks for the help 

[Using A3 Launcher, i get this.]

Hey guys, i'm new to epoch and all mods in general for arma 3. i've played serious amounts of time on general wasteland/ life servers but fancied into a venture of the unknown. 

Unfortunately  i've came across an issue with the A3 Launcher when i try and open it. I install it fine, create a desktop shortcut. Try to open it but then i get this pop up and nothing happens after it.

If anyone could help me i'd appreciate it. This is preventing me having a very merry christmas. hmmm.