Prøv at se tråden, som der linkes til
Og heri:
Cause : Previous bug in PHP fixed in latest version (Chances are your ISP has updated to the new version)
Fix: Goto Admin / Configuration / Sessions and change the "Sessions Directory" to tmp (no slashes)
If you can't get into Admin, goto your Database Admin page (usually PhPAdmin app.)
Click on any table on the left hand side.
Click on SQL at the top of the screen
Overtype whatever appears in the SQL window with ...
UPDATE configuration SET configuration_value = 'tmp' WHERE configuration_key='SESSION_WRITE_DIRECTORY'
Click Go