Hi, is there a way to downgrade back to 3.15.8 after a debian upgrade to 4.0.2? After purging 4.0.2 and reinstalling 3.15.8 the files are there but the db seems corrupt: Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py", line 111, in get_response response = callback(request, *callback_args, **callback_kwargs) File "/usr/lib/python2.7/dist-packages/django/views/decorators/debug.py", line 69, in sensitive_post_parameters_wrapper return view(request, *args, **kwargs) File "/usr/lib/pymodules/python2.7/nav/web/webfront/views.py", line 110, in login 'errors': errors, File "/usr/lib/python2.7/dist-packages/django/views/generic/simple.py", line 26, in direct_to_template c = RequestContext(request, dictionary) File "/usr/lib/python2.7/dist-packages/django/template/context.py", line 176, in __init__ self.update(processor(request)) File "/usr/lib/pymodules/python2.7/nav/django/context_processors.py", line 64, in account_processor if preferences.count() == 0: File "/usr/lib/python2.7/dist-packages/django/db/models/query.py", line 351, in count return self.query.get_count(using=self.db) File "/usr/lib/python2.7/dist-packages/django/db/models/sql/query.py", line 418, in get_count number = obj.get_aggregation(using=using)[None] File "/usr/lib/python2.7/dist-packages/django/db/models/sql/query.py", line 384, in get_aggregation result = query.get_compiler(using).execute_sql(SINGLE) File "/usr/lib/python2.7/dist-packages/django/db/models/sql/compiler.py", line 818, in execute_sql cursor.execute(sql, params) File "/usr/lib/python2.7/dist-packages/django/db/backends/postgresql_psycopg2/bas e.py", line 52, in execute return self.cursor.execute(query, args) DatabaseError: relation "accountnavbar" does not exist LINE 1: SELECT COUNT(*) FROM "accountnavbar" WHERE "accountnavbar"."... thx, Mischa -- Mischa Diehm | Network Operations Center (NOC) UniBasel | UniRechenZentrum (URZ) Klingebergstr. 70 | CH-4056 Basel Tel. +41 61 267 1574 | http://urz.unibas.ch