i don’t know if its my pc or what but unity just wont install on windows 8.1 i tried everything with the nsis error fixes (supposedly fixes) but it just wont install please can anyone help?:(:(:(:(:(:(
I’m having the same issue, when launching the installer I get an NSIS error, it thinks the download is corrupted, and I’ve tried downloading a new copy but no luck
Maybe try downloading the patch version mentioned here:
http://forum.unity3d.com/threads/246200-Unity-Patch-releases-discussion
The only reason I mention this is that the page has the file size in bytes, and the md5hash shown, which should help you work out if you have a valid download.