I downloaded the latest update. When I run ArduinoforAtmel Studio.msi, after selecting the repair option, the installer quickly quits with the  error message
A network error occurred when trying to read Release[1].msi.
I've re-downloaded the file a few times, all with the same result. 
The ArduinoForAtmelStudio.msi file is located on my C drive in the documents/downloaded folder, so there should be no network activity going on during the install.
  Running Window 7 , 32 bit.
Thanks

Right clicking on the MSI file does not give the option to run as administrator, although doing this works on other files ( EXE or shortcuts) that I tried. CTRL-SHIFT + clicking on the .msi file doesn't work properly either,in terms of that error.
  I moved the file to both documents\my documents folder as well as trying c:\program files\.
Same in both cases.
The progress bar gets 95% of the way through, when this error is thrown.
  No hurry on this- the existing install of VM works OK. While I can't find it now, I was sure I saw where the newest VM version allowed for the JTAGICE3 to be used a programmer from within VM, which would be nice, as I have one of these. (which works from Studio of course).
Thanks

I had no luck with 1) above, and can't see the applicability of 2)
re the ICE3: I only use AVR MCUs. The ICE3 did not show up in my current version of VM, but I didn't expect it to, as it doesnt show up under Arduino IDE either. I was only doing the upgrade of VM after I saw (?) that this version did support ICE3. I generally use my AVRISP mk II, but I have two dev. stations, and like to keep a programmer at each station, thus the use of the ICE3.
If i recall properly, when I originally installed/licensed VM, the installation required dotnet 35 and not the msi method.

Re ICE3. Yes, I figured you did something different from the arduino IDE to get the ICE3 working- that's why I was interested in the newest version.
I am not sure what your reference to the VM version number relates to in this thread. I mentioned that I thought I saw that the latest version supported ICE3, but don't see where you asked me what version I was running.
Actually I don't know how to display this- it doesn't show up any of the normal places I would look.

Thanks- seeing your answer I  now remember doing this for you during my initial VM installation. -but today I was navigating down into Tools/visual Micro- not tools/options.
result:
C:\Program Files\Visual Micro\Visual Micro for Arduino\Visual.Micro.AS6.dll
1.1407.10
  I have 2 VM licenses and VM on 2 computers but a month or so ago, my other computer suddenly failed to load either Studio 6.1 or 6.2, both of which were on it. I tried everything, even calling up a Windows restore point back before Studio/VM were initially loaded. Even then, I could not re-install Studio 6.1 or .2 - I got errors in the install process. So, I can't try the newest version of VM on this other computer, which would have been a useful comparison.
Thanks

Thanks Tim:
1) When I downloaded the newest version, it was in the evening, and I couldn't remember if I actually ran the install or not. When I didn't see the ICE3, I assumed I had not, so tried to do the install again. Seems like this was when I encountered the errors that I reported in this thread. So, that problem seems solved.
2)Yes I do have programmers.txt in the location noted. But I am still using IDE 1.05 not 1.5, so I guess that is why I am not seeing the IDE3 (no such file in the 1.0x folder). I had upgraded to 1.5, but reverted to 1.05 when I ran into various problems with 3rd party libraries etc.
3) Yes- something got screwed up in windows- Studio stopped working at some point after I had installed a few new applications, but I expected the system restore 
i ran,to a very old restore point, should have fixed it, but it didn't. I didn't report it to Atmel- I already wasted a lot of time on it, and will probably wait until I can do a clean install of windows, before re-trying.But, its a DOS partition on a MAC running Bootcamp, so its a bit of a chore.
Thanks for everything