I tried to install com.webassist.waecart507.zxp. First I got a message that the database can't be updated. With the second try the extension manager crashed and now I just get the watch and can't manage the extension anymore ...
I renamed the configuration folder and also reinstalled the extension manager but this doesn't help. Now I can't install any more extensions...
Working on a Mac with newest software installed.
If the installation works, what is the correct order to install the extensions? I can't find any information on this on the website.