Please help!

Bootstrap started
Found cached update
Renaming C:\Users\Karem\AppData\Roaming\.minecraft\launcher.pack.lzma.new to C:\Users\Karem\AppData\Roaming\.minecraft\launcher.pack.lzma
Unable to rename - could be on another filesystem, trying copy & delete.
Copy & delete succeeded.
Looking for update
Downloading: https://s3.amazonaws.com/Minecraft.Down ... .pack.lzma
Didn't find an update in time.
Reversing LZMA on C:\Users\not your bussiness\AppData\Roaming\.minecraft\launcher.pack.lzma to C:\Users\not your bussiness\AppData\Roaming\.minecraft\launcher.pack
FATAL ERROR: net.minecraft.bootstrap.FatalBootstrapError: Unable to un-lzma: LZMA.LzmaException: LZMA : Data Error
at net.minecraft.bootstrap.Bootstrap.unpack(Bootstrap.java:134)
at net.minecraft.bootstrap.Bootstrap.execute(Bootstrap.java:111)
at net.minecraft.bootstrap.Bootstrap.main(Bootstrap.java:367)


Please fix the error and restart.
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