Ever since the newest software download I have been having a problem with 1 of my HR20s. It refuses to recognize that a second tuner is attached. I can check signal strength and it shows very good readings on tuner 2, all over 90 on 99,103,101,110 and 119. But nothing makes the second tuner active, meaning I cant record 2 shows at once or watch a program other than the one that is recording. Any ideas? Thanks!