Hi Guys,
As has been stated the problem here is that the install to which the ETO 1.20 update was applied either already had Teds original Do217e5 installed or has had it added after the 1.20 patch has been applied.
thus cuasing the error message model name already used. to rectify, search for the files using that name, you should find two folders containg the ai_Do_217_E5_6NNP files
1 called ETO_DO_217E-5
2 and the second folder will have the defualt folder name as used by Ted.
remove the the defualt folder as supplied by Teds original install.
As for the ETO_He111H2, if you have the original bob_do17z2_5k+ba in your game then something has not worked correctly with your update.
The 1.20 patch should have removed the original bob_do17z2_5k+ba folder and its contents and then placed the new files into your aircraft folder.
As mentioned above by Bob, its a new He111 named as the removed Do17, by doing this we have protected the spawn, facilty, campaign and mission files that may have used the old bob_do17z2_5k+ba aircraft. (in addition to the readme file listed by Bob above there is a second readme file in teh actual ETO_He111H2 folder thats states the reasons as well)
If we had just removed the old plane and not replaced it with something else it would have left many oppertunities for your game to crash.
So again its the ETO_He111H2 folder that should remain in your install and the old bob_do17z2_5k+ba folder that needs to be removed.
again do NOT remove the ETO_He111H2 folder.
If you do chose to remove the new He111 model and leave the original Do17 model in your install you will get plane missmatch errors when trying to join an ETO online session.
regards Rob.