Fwd: problem with Fragments

hi,
I am running the latest version of avogadro on ubuntu 10.04, amd 64bit.

when I try to insert any “fragment” i got the message:

Cannot read file format of file
/usr/local/share/avogadro/fragments/yyyy/xxxx.cml.

where yyyy is the directory and xxxx is the name of the molecule to insert.

how can i fix it?

thank.
yury