VoidsWrath on Macbookpro?

I downloaded and installed the Voidswrath modpack launcher for mac and I installed the Pokepack and when the launcher closed it just gave me an error message saying that a crash happened and it seemed like it didn't even try to load Minecraft. I tried with the other modpacks and it did the exact same thing for them too.

Why is one of my youtube videos black?

Ok. So I use ScreenFlow to record on my mac. I used it for a while and have making youtube videos. I just uploaded a video of minecraft survival games. I looked on my channel and the video is black but I still have the audio… There's also a note that came up right as I uploaded it saying "This video may be blocked in some countries." I don't know why. Can someone please help me?!

Minecraft: I saw Herobrine on single player! What to do?

I'm not lying! I was playing minecraft today and suddenly out of no where Herobrine comes and there isn't even a message or anything that says he came!
He destroys and steals all my stuff! And I found a herobrine spawner nearby and I destroyed it but herobrine still kept coming afterwards killing my player! What to do

Also, don't believe me? I have a snapshot. I didn't get this pic off the Internet. You can search for a thousand years and you won't ever find this picture. This is herobrine.

Minecraft f3 doesn't work?

I play minecraft a lot and I would like to know how to check my coordinates. When I press f3 it turns the brightness up. I even looked at the controls and there's nothing about f3 or checking cords. I have hp PC with 4g of ram if that matters

Is this desktop pc good for gaming? Like minecraft and such?

I know i post tuns of is this pc good but i'm always looking for a ok pc anyway Can this pc play minecraft, far cry 3, assassins creed <any of them call of dutys any of them its a desktop hp pav here is link, just copy and paste into url bar scroll down for pc info scroll up for like price and that here the link

http://www.pcworld.co.uk/...l#longDesc

if it can play any of these games minecraft, far cry 3, assassins creed <any of them call of dutys any of them tell me what ones it can play here is pc info if you don't want to look at link

Desktop PC
Operating system Windows 8
Processor - AMD A8-6500 APU (3.5 GHz, 4.1 GHz with Turbo Core, 4 MB cache)
- Quad-core
Storage 1 TB HDD, 7200 rpm
PERFORMANCE RAM 6 GB DDR3
Graphics card AMD Radeon HD 8670D
Graphics card memory 1 GB
Motherboard AMD A75 FCH chipset
CONNECTIVTY Wireless 802.11 b/g/n
Ethernet Gigabit Ethernet (10/100/1000)
USB - USB 3.0 x 2
- USB 2.0 x 4
Video interface - HDMI x 1
- DVI x 1
Audio interface - 3.5 mm jack (output)
- 3.5 mm jack (input)
- Analogue audio out x 2
- Analogue audio in x 1
MEDIA Optical drive DVD/RW
Memory card reader 6-in-1 memory card reader
Expansion card slot - PCIe (x1) x 3
- PCIe (x16) x 1
SOUND Sound High Definition Audio 7.1
GENERAL Colour Black
Accessories included - AC power adapter
- User manual
Dimensions - 38.5 x 17.6 x 36.8 mm (H x W x D)
- 49.6 x 24 x 52 mm (H x W x D) (packaged)
Weight - 6.86 kg
- 9.36 kg (packaged)
Manufacturer's guarantee 1 year
Software included - Windows Store
- Windows Live Essentials
- Internet Explorer
- CyberLink PowerDVD
- HP Connected Photo
- HP Connected Music
- HP Games Console
- Skype
- 7-Zip
-Buy Microsoft Office to activate Office 2013 software on this PC
POWER PSU 300 W
FEATURES Keyboard Wired keyboard
Mouse / trackpad Wired mouse

Added (1). OH BTW if you can answer a quick question i have a desktop with no Wi-Fi card but i use a stick and how come my laptop is faster than the Wi-Fi stick download speed and internet? I mean does a Wi-Fi card go faster the stick is 300mbps?

Installing Minecraft twice on one computer?

I have 2 daughters who play Minecraft. The older one bought an account and we downloaded it to our PC. Now her younger sister wanted an account, so we bought her one as well. The problem is that when she goes to play, even though she signs in with her account, she sees her sister's worlds. Is there a way we can download another copy on our PC, or a way she can have her own account and open worlds to play on?