Alcatraz in Xcode 7.1

@Mopr answer will possibly resolve, but did not work for me. I got a more complete answer from Enisto Pino Alcatraz issue 352 Which I am reposting here

1) Close Xcode

2) Remove previous defaults for Xcode 7.0

defaults delete com.apple.dt.Xcode DVTPlugInManagerNonApplePlugIns-Xcode-7.0

3) Uninstall Alcatraz

rm -rf ~/Library/Application\ Support/Developer/Shared/Xcode/Plug-ins/Alcatraz.xcplugin

4) Remove all packages installed via Alcatraz

rm -rf ~/Library/Application\ Support/Alcatraz/

5) Update the DVTPlugInCompatibilityUUID to the 7.1 in the plists of plugins:

find ~/Library/Application\ Support/Developer/Shared/Xcode/Plug-ins -name Info.plist -maxdepth 3 | xargs -I{} defaults write {} DVTPlugInCompatibilityUUIDs -array-add defaults read /Applications/Xcode\ 7.1.app/Contents/Info DVTPlugInCompatibilityUUID

6) Reset Xcode select

sudo xcode-select --reset

7) Open Xcode

8) Install Alcatraz

curl -fsSL https://raw.github.com/supermarin/Alcatraz/master/Scripts/install.sh | sh

9) Restart Xcode

10) Select "Load Bundles" in dialog box at Xcode start.

I did the same as Ryan suggested and it didn't work. Then I realized his has:

defaults delete com.apple.dt.Xcode DVTPlugInManagerNonApplePlugIns-Xcode-7.0

Since I am on 7.1 I changed it to

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

P.S. I would make this a comment but I'm too much of a noob to make comments 3;(

I had the same issue with 7.1 and just reinstalling Alcatraz didn't help. I also have XCode 6.4, which may be related.I found the solution here - https://github.com/supermarin/Alcatraz/issues/352

As mentioned by welsonla, you have to exit XCode and enter in terminal

find ~/Library/Application\ Support/Developer/Shared/Xcode/Plug-ins -name Info.plist -maxdepth 3 | xargs -I{} defaults write {} DVTPlugInCompatibilityUUIDs -array-add `defaults read /Applications/Xcode.app/Contents/Info DVTPlugInCompatibilityUUID`

then

sudo xcode-select --reset

I also uninstalled Alcatraz before that and reinstalled it after, just in case.