Minecraft wont load

I tried to load up minecraft with the new launcher, it wont load. Here is what it says-
Unable to save download. realms-1.9.1.jar
Name: realms-1.9.1.jar
URL: https://libraries.minecraft.net/com/mojang/realms/1.9.1/realms-1.9.1.jar
Error details: Attempting to move successful download to C:/Users\Amanda\AppData\Roaming\.minecraft\libraries\com/mojang/realms/1.9.1/realms-1.9.1.jar
The process cannot access the file because it is being used by another process
Filename on disk: da4b-c7e3-3242-c8f4
Path: C:\Users\Amanda\AppData\Local\Temp\da4b-c7e3-3242-c8f4
Exists: file