big problem with application manager, Operation failed plus showing no apps installed although i can configure my catalogues. I have tried disabling/altering the ones suggested but no luck, i cannot install rootsh as app manager says there is no application found even though i have the install file saved to memory. my log is:

hildon-application-manager 2.2.52.2
E: Encountered a section with no package: header
E: Problem with Mergelist /var/lib/apt/lists/download.maemo.nokia.com_fremantle_ssu_apps_._Pack ages
E: The package lists or status file could not be parsed or opened.

this log is repeated twice, please help i don't know much about programming