I have seen some of the 24 series receivers for some unknown reason skip the guide loading segment of the activation process. I force a download on all out of the box receivers during an install....and this occurs even with that. When this happens not only will the guide not be filled out for the short term but often get "channel not available" on some channels and often on locals. Resending authorization cures it for me. I'd guess this is a new install and the tech did not check things out well enough before turning it over to you.
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