I've got the same problem. Tried to reinstall Alcatraz as often do after updating Xcode.

Take a look at #362 (comment)

thanks!

Doesn't work.

Did all of the suggestions, and won't work as well. 😢

Update:
The issue is some certificates won't pass the checks by curl, so doing this will work:

cd ~/Library/Application Support/Developer/Shared/Xcode/Plug-ins
wget https://github.com/supermarin/Alcatraz/releases/download/1.1.10/Alcatraz.tar.gz --no-check-certificate
tar xzvf Alcatraz.tar.gz

@jpincheira's method got Alcatraz working for me again. Thanks!

@jpincheira you saved my day! thanks!

I tried @jpincheira method and then deleted previous defaults, it works.
Thanks!

defaults delete com.apple.dt.Xcode DVTPlugInManagerNonApplePlugIns-Xcode-7.1

@jpincheira U saved my night! thanks!

@EvanLu
I found the deleting of previous defaults step is required.

thanks!

Thanks to all!

@EvanLu tks a lot!

I try @jpincheira method and then try @EvanLu method,but terminal give me message：

Domain (com.apple.dt.Xcode) not found.
Defaults have not been changed.

@jpincheira Thanks. It's work!

type "defaults delete com.apple.dt.Xcode DVTPlugInManagerNonApplePlugIns-Xcode-7.1" in terminal will fix this issue, restart Xcode and load bundles

@ALL no problem guys, glad it helped! 👍

@jpincheira thanks, it works

defaults delete com.apple.dt.Xcode DVTPlugInManagerNonApplePlugIns-Xcode-7.1
curl -fsSL https://raw.githubusercontent.com/supermarin/Alcatraz/deploy/Scripts/install.sh | sh

Thanks! @jpincheira and @EvanLu.

cd ~/Library/Application Support/Developer/Shared/Xcode/Plug-ins wget https://github.com/supermarin/Alcatraz/releases/download/1.1.10/Alcatraz.tar.gz --no-check-certificate tar xzvf Alcatraz.tar.gz rm Alcatraz.tar.gz defaults delete com.apple.dt.Xcode DVTPlugInManagerNonApplePlugIns-Xcode-7.1

Restart Xcode and Loada Bundles again.

@jpincheira you saved my day!

thanks everybody

@KetilDeng Yes, I have the same issue.
I tried defaults delete com.apple.dt.Xcode DVTPlugInManagerNonApplePlugIns-Xcode-7.1.1
And terminal response:
Domain (com.apple.dt.Xcode) not found.
Defaults have not been changed.

@kevinlee85 Work for me, make sure that 7.1.1 version from command line equal to your Xcode version.

If you couldn't find DVTPlugInManagerNonApplePlugIns, try look at this http://stackoverflow.com/questions/30361228/why-are-my-xcode-plugins-such-as-clang-format-installed-with-alcatraz-no-longe