If you have fusecompress filesystems created prior to Fedora 12, you will need to update them to the new on disk format in order to use them with this version of fusecompress. Install the fusecompress_offline1 package via yum and read the README.fedora file there for instructions:: su -c yum install -y fusecompress_offline1 less /usr/share/doc/fusecompress_offline1*/README.fedora