Maybe this will help...

Faulting application name: Opera_NI_beta.exe, version: 32.0.1948.4, time stamp: 0x55ca830e
Faulting module name: nvinit.dll_unloaded, version: 0.0.0.0, time stamp: 0x5101a101
Exception code: 0xc0000005
Fault offset: 0x74d0ce59
Faulting process id: 0x2d58
Faulting application start time: 0x01d0df3bad40fae9
Faulting application path: C:\Users\MYUSER\AppData\Local\Temp\Opera Installer\Opera_NI_beta.exe
Faulting module path: nvinit.dll
Report Id: eafa18eb-4b2e-11e5-8507-b00594f0936d

Get the same thing if I try the standard version as well. I can however disable every part of my Antivirus and get it to install but it will not launch. it gives this if you try to launch it. there are no messages in any of the AV logs that its blocking or stopping anything

Faulting application name: launcher.exe_Opera beta Internet Browser, version: 32.0.1948.4, time stamp: 0x55ca83b3
Faulting module name: launcher.exe, version: 32.0.1948.4, time stamp: 0x55ca83b3
Exception code: 0x80000003
Fault offset: 0x00022ac9
Faulting process id: 0x7e1c
Faulting application start time: 0x01d0df3d13c6724f
Faulting application path: C:\Program Files (x86)\Opera beta\launcher.exe
Faulting module path: C:\Program Files (x86)\Opera beta\launcher.exe
Report Id: 518d729f-4b30-11e5-8507-b00594f0936d

I got it from http://www.opera.com/computer/beta

Win7, McAfee VirusScan Enterprise 8.8

I have tried installing both the online and the offline installer but both crash at the end with a windows popup states opera beta internet browser has stopped working. If I look in the install dir, some files are there but I don't even see a main executable file.

The offline is named Opera_beta_32.0.1948.4_Setup

I do not have the regular opera installed if that makes any difference.