I Mean, If you have the problem installing of VC:MP then show the error this:
(https://forum.vc-mp.org/proxy.php?request=http%3A%2F%2Fanswers.unity3d.com%2Fstorage%2Ftemp%2F5673-capture.png&hash=20bbd88928955a61114db419d5aae6edea2cae32)
How to fix the NSIS error for VC:MP
Have you even checked the link profided in the errorscreen?
http://nsis.sourceforge.net/mediawiki/index.php?title=Why_do_I_get_NSIS_Error%3F&redirect=no
Thank you