[bug] Visualize buffer issue

Build Info
Version: 1808360  
Install Path: D:\UDK\Rocket

OS: Windows 7  x64
RAM: 16 GB  
Graphics Card: GTX 650 TI 1GB
UAC: On

Description:
I created a blank project (with no code).
In the view port, when I go to View mode (Lit for default) and select the Visualize buffer, I get this error:

Assertion failed: Actions.BufferVisualizationModeCommands.Contains(ViewportCommandName) [File:D:\BuildFarm\buildmachine_++depot+UE4-Rocket+Beta4\Engine\Source\Editor\LevelEditor\Private\SLevelViewportToolBar.cpp] [Line: 738]

Stack:
Address = 0xe88f93a6 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xe87f9b6a (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xddae2822 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-LevelEditor.dll]
Address = 0xdda4ee50 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-LevelEditor.dll]
Address = 0xdda82b44 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-LevelEditor.dll]
Address = 0xe82dd201 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe82c8d26 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe804afaa (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe804d326 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe81ebf52 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe82fb094 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe82e59d8 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe8143377 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe813a39e (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe88d8b3d (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xe88cacca (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xe88d9556 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xe88c68d2 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0x77669bd1 (filename not found) [in C:\Windows\system32\USER32.dll]
Address = 0x776698da (filename not found) [in C:\Windows\system32\USER32.dll]
Address = 0xe88fe559 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xe88d9beb (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0x3f355e64 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f34cb8c (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f34cbfa (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f35772b (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f3583c3 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x7754652d (filename not found) [in C:\Windows\system32\KERNEL32.dll]
Address = 0x7777c541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
Address = 0x7777c541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]

Address = 0xfd5e940d (filename not found) [in C:\Windows\system32\KERNELBASE.dll]
Address = 0xe88f765b (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xe8812484 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xe87f9c0f (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xddae2822 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-LevelEditor.dll]
Address = 0xdda4ee50 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-LevelEditor.dll]
Address = 0xdda82b44 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-LevelEditor.dll]
Address = 0xe82dd201 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe82c8d26 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe804afaa (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe804d326 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe81ebf52 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe82fb094 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe82e59d8 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe8143377 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe813a39e (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xe88d8b3d (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xe88cacca (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xe88d9556 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xe88c68d2 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0x77669bd1 (filename not found) [in C:\Windows\system32\USER32.dll]
Address = 0x776698da (filename not found) [in C:\Windows\system32\USER32.dll]
Address = 0xe88fe559 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xe88d9beb (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0x3f355e64 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f34cb8c (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f34cbfa (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f35772b (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f3583c3 (filename not found) [in D:\UDK\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x7754652d (filename not found) [in C:\Windows\system32\KERNEL32.dll]
Address = 0x7777c541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
Address = 0x7777c541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]

Hi Oscar,

This is a known issue in Rocket Beta 4 that occurs whenever mousing over “Visualize Buffer”. It has already been fixed internally and will not occur in the next Rocket release.

Addition info can be found on the forums:
http://forums.epicgames.com/threads/973020-Beta-4-Visualize-Buffer-crash-workaround

Cheers!