Wait a sec...

You did what???
"I also tested install packages from 2.0 and Mistral and even from Maemo 1.1 and 3.2 folder."

" All gives that "Incompatible package." "

Well of course it would...
just adding stuff from other os's ...
Even doing it twice with the right ones...the wrong way...could give you probs.

Bet you didn't check the var lib install...
Bet if you go inside you will find a duplication of paths inside the same ...
so what should be var/lib/install ..
is most likely looking like this.... /var/lib/install/var/lib/install.

so it simply makes the issue worse.


hence incompatible packages

you could consume a great deal of time trying to clean it out and still not be successful...

Or just reflash.
And start over and install what is meant for the os you wish to use.