1, Not a clue sorry
2, When flying about go to "Options" in the toolbar (press Alt+Enter if in full screen) and see if Radio comunication and Tac display have a tick by there name. If they dont just select them and you will be available.

If the have ticks by em then i dont have a clue sorry

Stiz

Another word of advice is, once you have recover the program in what you may consider a satisfactory level. Make a CFS2 Folder as backup.

Make a new folder. Name it something  else than Combat flight Simulator. That way when you insert the CFS2 Disk to the program wont get confuse. You can name it perhaps CFS2 Backup.

Copy and paste all the cotent from the original CFS2 Folder into the new Folder.

That way when you down load something. You test it and if something went wrong and you now what folder you just down loaded the upgrades into.

All you just need to do now is to delete the cotent of that corrupt folder and go to your Backuo CFS2 folder
of the same name. Copy and paste into from the Backup into the CFS2 corrupt folder and this way you wont have to be reistaling every time something goes wrong.

Another word of Advice is to do one upgrade at a time instead of multiples. This way if something goes wrong you will know where the corrupt folder is and be able to correct it. Beside this will decreases the chances of something going wrong.

I hope I have been helpful. Please come and tell us if this post was able to help you out.

James007