[MCL-6791] Can't launch a world

Launcher 2.0.832

I have been trying to open a world and play but every time I do I get ERROR
Even deleted/reinstall twice but still get every time I try and launch a game :

Unable to save download. client-1.7.xml
Unable to save download. netty-1.6.jar
Unable to save download. oshi-core-1.1.jar
Unable to save download. jna-3.4.0.jar

13:27:51	launcher	Preparing to launch minecraft client for 1.11.2
13:27:51	launcher	Checking installations.
13:27:51	launcher	Minecraft client 1.11.2 requires 141612063 bytes to download.
13:27:51	launcher	Starting!
13:27:51	launcher	Successfully downloaded https://libraries.minecraft.net/oshi-project/oshi-core/1.1/oshi-core-1.1.jar to C:/Users\Michelles\AppData\Roaming\.minecraft\libraries\oshi-project/oshi-core/1.1/oshi-core-1.1.jar
13:27:51	launcher	Unable to download https://libraries.minecraft.net/net/java/dev/jna/jna/3.4.0/jna-3.4.0.jar to C:/Users\Michelles\AppData\Roaming\.minecraft\libraries\net/java/dev/jna/jna/3.4.0/jna-3.4.0.jar


13:27:47	launcher	Preparing to launch minecraft client for 1.11.2
13:27:47	launcher	Checking installations.
13:27:47	launcher	Minecraft client 1.11.2 requires 141612063 bytes to download.
13:27:47	launcher	Starting!
13:27:47	launcher	Unable to download https://libraries.minecraft.net/oshi-project/oshi-core/1.1/oshi-core-1.1.jar to C:/Users\Michelles\AppData\Roaming\.minecraft\libraries\oshi-project/oshi-core/1.1/oshi-core-1.1.jar


13:29:07	launcher	Preparing to launch minecraft client for 1.11.2
13:29:07	launcher	Checking installations.
13:29:07	launcher	Minecraft client 1.11.2 requires 141581090 bytes to download.
13:29:07	launcher	Starting!
13:29:07	launcher	Successfully downloaded https://libraries.minecraft.net/net/java/dev/jna/jna/3.4.0/jna-3.4.0.jar to C:/Users\Michelles\AppData\Roaming\.minecraft\libraries\net/java/dev/jna/jna/3.4.0/jna-3.4.0.jar
13:29:08	launcher	Unable to download https://libraries.minecraft.net/net/java/dev/jna/platform/3.4.0/platform-3.4.0.jar to C:/Users\Michelles\AppData\Roaming\.minecraft\libraries\net/java/dev/jna/platform/3.4.0/platform-3.4.0.jar

13:41:53	launcher	Preparing to launch minecraft client for 1.11.2
13:41:53	launcher	Checking installations.
13:41:53	launcher	Minecraft client 1.11.2 requires 140572360 bytes to download.
13:41:53	launcher	Starting!
13:41:53	launcher	Successfully downloaded https://libraries.minecraft.net/net/java/dev/jna/platform/3.4.0/platform-3.4.0.jar to C:/Users\Michelles\AppData\Roaming\.minecraft\libraries\net/java/dev/jna/platform/3.4.0/platform-3.4.0.jar
13:41:54	launcher	Unable to download https://libraries.minecraft.net/com/ibm/icu/icu4j-core-mojang/51.2/icu4j-core-mojang-51.2.jar to C:/Users\Michelles\AppData\Roaming\.minecraft\libraries\com/ibm/icu/icu4j-core-mojang/51.2/icu4j-core-mojang-51.2.jar

My Minecraft was working fine until this new launcher.

Edit/Update - Just found a way to go back to the old launcher and loaded up a world with no problems like it's always done.