diff -r 62e89e696a3b -r a79e88aad555 server/__init__.py
--- a/server/__init__.py	Fri Jun 21 16:18:20 2013 +0200
+++ b/server/__init__.py	Fri Jun 21 16:01:59 2013 +0200
@@ -284,7 +284,6 @@
     config._cubes = None # avoid assertion error
     repo, cnx = in_memory_repo_cnx(config, login, password=pwd)
     repo.system_source.eid = ssource.eid # redo this manually
-    assert len(repo.sources) == 1, repo.sources
     handler = config.migration_handler(schema, interactive=False,
                                        cnx=cnx, repo=repo)
     # install additional driver specific sql files