Over the weekend, I installed Windows 10 (64-bit) on a new PC, and started installing software. Late yesterday, I installed LabVIEW 2014 and LabVIEW 2015, and to my surprise, did not have any installation problems (I did a similar install two weeks ago on a Windows 7 system with multiple "Service not running" bugs, since fixed).
I just installed VIPM 14.0 and activated my Pro license. I successfully connected to both LabVIEW versions, downloaded packages, and then tried to install. I usually start with a single package, NI GXML, then do the OpenG Toolkit.
I got bizarre errors when doing this. Nothing installed, on either 2014 or 2015. I'm going to try to paste the error message I got when trying to install GXML on LV 2015: [Oops -- can't figure out how to post a SnagIt snapshot, thought the Image menu button would work like the LabVIEW Forums and let me find the image on my disk, but it wants a URL ...] So here (I hope) is a Copy/Paste of the text ...
I'm going to try a few more times, with reboots in between. Never had VIPM flat out fail on me (I have had problems with I forgot to enable TCP/IP, but I haven't made that mistake in at least 5 years ...)