seams because of deprecated NSTextInput, which should be changed to NSTextInputClient, it wont work in XCode6.2 even if building is successful and passing UUID check worked.
Xcode[...]: Failed to connect (hostViewController) outlet from (NSTextFieldCell) to (IDEQuickHelpCompletionInfoViewController): missing setter or instance variable
seams because of deprecated NSTextInput, which should be changed to NSTextInputClient, it wont work in XCode6.2 even if building is successful and passing UUID check worked.
Xcode[...]: Failed to connect (hostViewController) outlet from (NSTextFieldCell) to (IDEQuickHelpCompletionInfoViewController): missing setter or instance variable