Minecraft Forums

When I try to update my Minecraft to 1.9, it says "Preparing..." and doesn't do anything.

This is the log:

[13:42:40 INFO]: Minecraft Launcher 1.6.11 (through bootstrap 100) started on osx...
[13:42:40 INFO]: Current time is Mar 5, 2016 1:42:40 PM
[13:42:40 INFO]: System.getProperty('os.name') == 'Mac OS X'
[13:42:40 INFO]: System.getProperty('os.version') == '10.10.1'
[13:42:40 INFO]: System.getProperty('os.arch') == 'x86_64'
[13:42:40 INFO]: System.getProperty('java.version') == '1.8.0_74'
[13:42:40 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'
[13:42:40 INFO]: System.getProperty('sun.arch.data.model') == '64'
[13:42:40 INFO]: proxy == DIRECT
[13:42:40 INFO]: JFX is already initialized
[13:42:40 INFO]: Refreshing local version list...
[13:42:40 INFO]: Refreshing remote version list...
[13:42:41 INFO]: Refresh complete.
[13:42:41 INFO]: Loaded 3 profile(s); selected 'nope'
[13:42:41 INFO]: Refreshing auth...
[13:42:41 INFO]: Logging in with access token
[13:48:03 INFO]: Getting syncinfo for selected version
[13:48:03 INFO]: Queueing library & version downloads
[13:48:04 ERROR]: An update to your launcher is available and is required to play 1.9. Please restart your launcher.

And whenever I restart my launcher, it doesn't auto-update? Any ideas?

Test what would happen if you download the minecraft launcher from minecraft.net to see if the problem continues. If it does try to change the location of where minecraft runs, delete the current folder that its in, or move it (basically do something to make minecraft re-create the folder) and test it.