Error Installing kali Linux 2016.2, etc

Hi
i want to install kali linux on a USB Stick using Paralells Desktop but as soon as i boot up with my PC it stuck and says "Gave up waiting for boot device".
then i tried to burn the iso to a second USB Stick using Win32Diskmanager and it also stucked with this message. i also tried it with the dd command on Mac. same problem
Then i tried all this with the kde version of kali linux. same error. i downloaded the iso image via torrent, same error
Then i tried to install kali on a second partition on my Macbook using an USB Stick and it always Stuck on 60% and says Error installing System. i tried it with different
iso images and kali versions (weekly builds 39/40 and 2016.2) different burn methodes (win32disk manager, dd mac, dd ubuntu) different drives (external 250gb HDD, 2nd partition MAC, 3 different USB Sticks.)

Now i don't know what to do pls help i have absuzly no idea what i am doing wrong.
Sry for bad english i hope you you didn't got cancer. :D