csv import doesn't work

[Nicoco Kinlidex]

Package: tellico
Version: 1.2.7 3.5.5, Debian Package 4:3.5.5a.dfsg.1-5 (4.0)
Severity: normal
Compiler: Target: i486-linux-gnu
OS: Linux 2.6.16-1-686 i686 (Debian Package 4:3.5.5a.dfsg.1-5 (4.0))

when I try to import a csv, the dialog box correctly shows up the different fiels and their content, but when I click OK, nothing is added to my collection.
I tried different files, none of them work. I've tested tellico 1.2.4 and 1.2.7