The open/close fps bug might be caused by some faulty checking of the lens cover state. I'll have a look at it and see if I can reproduce it. If I do forget it, please file a bug in http://bugs.maemo.org so I get a reminder.

As to bundling the plugins into the main app, this might be a good idea. I thought the app manager would install the plugins automatically when they are named in the "Recommends" field in the package. If there is no way to make this work, I'll look into bundling it all together.

@wikiwide: just as a note if you don't want to copy the compiled file into /usr, you may place your .so in /home/user/.config/mbarcode/plugins instead. I don't know why it doesn't work without qmake, and sadly, Qt isn't saying too much about why plugins won't load. I would suggest you make it work with qmake first, and then try to compile it by hand. Good luck!