Well you shouldn't close wazapp while it is downloading a pic Had the same issue once... Your *.db is corrupted and you can overwrite it with a backup (if u have one) or you could use SQ Lite Manager for Firefox (on computer) to open your db and delete the photo but it is a bit difficult. I also noticed this issue a couple of times but it is rare (~once in 2 weeks) and restarting wazapp fixing it for me. Dunno why it is happening.