Unreal Engine 4.7 Released!

hey guys…
i don’t know what happened to my download progress …
in downloading 4.7.0 from launcher it’s changed to 4.7.1 automatically and then after 6 hours it’s stopped from downloading and make a folder at address
programfiles/epic games/ launcher/ VaultCache/ UE_4.7/ stage/ install … with 6.06GB size

after downloading progress stopped i start download again but it’s started from begin and make a folder in a new location at address
programfiles/epic games/ launcher/ PatchStaging/ UE_4.7Live-Windows install …

please help me on downloading progress why it’s stopped from downloading and why didn’t resume downloading again ?
if the VaultCache downloaded files isn’t required can i delete them ?

i see all files in VaultCache and PatchStaging, install folder are the same !