Hello, I did:
Deleted everything that has to do with WhatsApp and waxppplugin. Wazapp +. Db
I installed WhatsApp new, it did not start yet.

I've followed these instructions.

1. download latest dev .zip from wazapp github ( https://github.com/tgalal/wazapp/zipball/dev )
2. extract .zip on Your pc
3. delete wazapp & wazapp_init files from that client folder
4. now zip only /client folder with all subfolders & structure
5. transfer it to Your N9
6. open rooted Filebox (password: rootme) and move that .zip to /opt/waxmppplugin/bin/wazapp folder
7. extract .zip in that folder accepting to overwrite all existing files
8. open terminal, enter devel-su, then rootme as the password
9. execute command: apt-get install python-dateutil and wait ( Packagename was wrong in previous description)
10. execute: cd /opt/waxmppplugin/bin/wazapp
13. execute: chmod 755 *
11. exit terminal
12. start Wazapp from Your homescreen

i can start the programm, sync... but i cant see that i can start group chat or sending a picture ?? or is it only possible to recieve a picture and group chat?