If you are seeing your TV stations/channels/EPG in the Standard View, and not in Theater View, then it would suggest to me that the Theater View setup is wrong.
Do you have a default Theater View? If yes, you could "reset" the view (Tools>Options>Theater View then "Reset" is located next to the Items To Show box.
If you have a custom Theater View setup, you may not want to Reset which would remove all your custom work. If this is the case, you can check the setup for "Guide". Click on Guide to select it, then on "Set Rules For File Display".
You should have (for rules):
Custom [TVTime]=>#TVGuideStartDate
Custom -[=TVInfo(ChannelKeywords)&DataType=
[Hidden]
Custom [=TVInfo(IsOnNonTopGroupedChannel)]=[0]
[/list]
EDIT: Sorry - ignore the stuff above, it is not displaying correctly, the forum/website is changing what I post here.