Xcode 7.2.beta.3 Can't update doc sets

Installed Xcode 7.2.beta.3 and trying to update doc sets but get error

Could not download and install Xcode 7.2 Documentation. Don't know how to install package with extension from file:///Users/me/Library/Caches/com.apple.dt.Xcode/Downloads/com.apple.adc.documentation.Xcode-702.2.. Downloaded from {

dependencies = (

);

fileSize = 239503175;

identifier = "com.apple.adc.documentation.Xcode";

name = "Xcode 7.2 Documentation";

source = "https://developer.apple.com/services-account/download?path=/Documentation/Xcode_7.2_beta_2_DocSets/03143045A.dmg";

userInfo = {

ActivationPredicate = "7.2.0 >= '7.2'";

Category = Documentation;

IconType = IDEDownloadablesTypeDocSet;

InstallPrefix = "/Users/me/Library/Developer/Shared/Documentation/DocSets";

InstalledIfAllReceiptsArePresentOrNewer = {

"com.apple.pkg.5.0.DevToolsDocset" = "10.9.0.0.1.1446334486";

};

RequiresADCAuthentication = 1;

Summary = "My description of content";

};

version = "702.2";

}.