A null value was found where an object instance was required

["Antti Ahonen" <aahonen gmail com>]

I just updated my Ubuntu to Gutsy, new F-spot looks very good, thought I do have a little problem with it. 

When I import pictures, I get this error message with all the JPG files:
"A null value was found where an object instance was required"
What does this mean?
It still does import the pictures when I press skip, even thought it loses the tags. Worst problem is, that I can not import any pictures, since there is no possibility to skip all (is there), only to skip one image at the time. 

I am planning to copu my 150000 pictures database to this machine, so it would be very good not to click the skip button 150000 times. 

Also would be very nice to get the tags working. 

Any suggestions?