Alcatraz in Xcode 7.1

Question

Note that from Xcode 8 Alcatraz no longer works Editor Extension Tutorial

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I am unable to install Alcatraz for Xcode 7.1

According to

Answer 1

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.