BTW – where are 3 out of 4 of your chainring bolts Eve?
After taking the photo, I had to rumage around for short chain ring bolts and I adjusted the front mech (not essential, it works without adjusting the front mech).
However, like Northwind and TJ, I don't experience any chain drop with a double chain ring setup without a bash ring. A bash ring makes it all look nice and neat, I suppose, but it's not essential. I like to play on slow speed silly techy rocks at places like Stainburn, if you take away the big chain ring, you are very unlikely to bash anything.