Okay, that is really weird. The test post you made is working fine in the forum basket - where deleted posts go. I'm thinking that this thread is having problems. If it doesn't work in another - seperate - thread, let me know. If it does, you may need to just post new updates in a different threads for a little while. I'll contact our host.
The fact you are using dropbox may be part of the problem, but in some cases the photos work...