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When trying to Refactor->Rename a variable, the system always returns a popup error stating "No Patterns Found". Product Version: NetBeans IDE 8.1 (Build 201510222201) Java: 1.8.0_66; Java HotSpot(TM) Client VM 25.66-b17 Runtime: Java(TM) SE Runtime Environment 1.8.0_66-b17 System: Windows 10 version 10.0 running on x86; Cp1252; en_US (nb) and System: Linux version 2.16.0-53-generic (Ubuntu 14.04) running on amd64; UTF-8; en_US (nb)