I have just installed a new SSD drive and have set up a new bootable el capitan usb drive via diskmakerx. I downloaded th .dmg from AppStore. I then booted with the usb drive and formatted the SSD with Mac journal extended and GUID. Started to install and then it stuck on 1 sec for 15-20 min and then a error message appeared. Saying "Couldn't complete copy". I have tried two times and formatted again but same result. Really need to use my computer so any suggestions on how to fix this? Thanks in advance!