Bumping, I have the same issue where I get ID=17 when joining my own game
UPDATE: After looking though the help forums I found a solution to this issue. You just have to keep reuploading your game until it lets you play it.
1. Go to the game's page that you can't join
2. Click on the EDIT button.
3. To the "Place file" field and put in your place file
4. Click upload
5. Now try joining your game again
6. If you still get id=17 then repeat steps 1 through 5 otherwise the issue should be fixed now.