Right click the windows icon (bottom left) select control panel, select program and features, then press turn on features. When you expand Net-framework 3.5 all box's must be ticked. Your PC may at this stage need a restart
Next make sure Net-framework 4.6 just has the black box and when you expand only ASP.NET 4.6 is ticked. Now go back to jungle flasher and at this stage if you try to run it it will simply run as a processor and wont open.