upgrade?
 

Is it possible to upgrade from a lite version to a pro version without loosing data?

Yes, you can upgrade from PhotoPlog Lite to PhotoPlog Pro without losing data. Of course, it's always a good idea to make a backup first. :)

So a reinstall is necessary to upgrade?

If I remember correctly there are upgrade specific instructions in the readme file that comes with Photoplog Pro. As I recall they didn't look too tricky...

::tosses two shiny coins in hat::

James and Susan

James is correct; there are readme instructions that come with the pro ZIP package, but do not uninstall the lite version; otherwise you will lose your gallery database content.