I've recently installed the latest version of 1Password for Android on my HTC One M8 running lollipop. When attempting to sync my vault via dropbox, which was created on my mac running 1Password 5, I can see the vault via 1Password on my phone, however when it starts to download the files from dropbox it says first, that it can find the fault and then starts the sync of the files. It's at that point that it reports: "Can't download file [name of file here]" for all the files. Once sync has finished I have one password in the vault when there should be in excess of 290 passwords there. I've checked access via dropbox app on my phone and everything looks ok.
The sync works fine between my iPad and MAC.
Any suggestions on what I can check - thanks.