Try next steps on windows 7: 1. Unload PC Suite from memory 2. remove all from dir C:\Users\<user name>\AppData\Roaming\Nokia\PCSync\SynchData 3. Run last version of PC Suite. 4. Connect N900 in PC Suite mode 5. Look to \My Computer\N900 (PC-Suite Mode)\Data dir (see you file qf?) 6. Run Map Loader