Problems upgrading from vtiger 5.2.1

[gorundown]

Turned on log4php logging. Here's what it's showing:

2016-04-30T18:42:35+00:00 DEBUG index authenticated_user_theme is softed
2016-04-30T18:42:35+00:00 DEBUG index authenticated_user_language is en_us
2016-04-30T18:42:35+00:00 DEBUG index authenticated_user_id is 1
2016-04-30T18:42:35+00:00 DEBUG index app_unique_key is REDACTED
2016-04-30T18:42:35+00:00 DEBUG index function getTranslatedString(APP_NAME) - translated to (coreBOS)
2016-04-30T18:42:35+00:00 DEBUG index function getTranslatedString(LNK_PRIVACY_POLICY) - translated to (Privacy Policy)
2016-04-30T18:42:35+00:00 INFO VT PearDatabase ->ADODB disconnect
2016-04-30T18:42:35+00:00 DEBUG VT query being executed : SELECT * FROM vtiger_version
2016-04-30T18:42:35+00:00 DEBUG VT Entering set_default_config(Array
(
[allow_exports] => all
[upload_maxsize] => 3000000
[listview_max_textlength] => 40
[php_max_execution_time] => 0
)
) method ...
2016-04-30T18:42:35+00:00 DEBUG VT Exiting set_default_config method ...
2016-04-30T18:42:35+00:00 DEBUG index ****Starting for new session
2016-04-30T18:42:35+00:00 DEBUG index The current user does not have a session. Going to the login page
2016-04-30T18:42:35+00:00 DEBUG index Entering return_module_language(,Users) method ...
2016-04-30T18:42:35+00:00 WARN index Unable to find the module language file for language: and module: Users
2016-04-30T18:42:35+00:00 DEBUG index Exiting return_module_language method ...
2016-04-30T18:42:35+00:00 DEBUG index Entering return_application_language(en_us) method ...
2016-04-30T18:42:35+00:00 DEBUG index Exiting return_application_language method ...
2016-04-30T18:42:35+00:00 INFO VT PearDatabase ->ADODB getColumnNames table=vtiger_organizationdetails
2016-04-30T18:42:35+00:00 DEBUG index Prepared sql query being executed : select * from vtiger_organizationdetails

You can see that it finds the user and pulls information from the record. Then suddenly, it says the current user does not have a session

Also, the language field wasn't set for admin, so I ran this query: update vtiger_users set language='en_us' where user_name='admin';

Set error_logging to all and this shows up on the Login:
Deprecated: Assigning the return value of new by reference is deprecated in /var/www/vtigercrm/adodb/adodb.inc.php on line 893 Deprecated: Assigning the return value of new by reference is deprecated in /var/www/vtigercrm/adodb/adodb.inc.php on line 1919 Deprecated: Assigning the return value of new by reference is deprecated in /var/www/vtigercrm/adodb/adodb.inc.php on line 1991 Deprecated: Assigning the return value of new by reference is deprecated in /var/www/vtigercrm/adodb/adodb-xmlschema.inc.php on line 373 Deprecated: Assigning the return value of new by reference is deprecated in /var/www/vtigercrm/adodb/adodb-xmlschema.inc.php on line 385 Notice: Undefined index: path in /var/www/vtigercrm/include/utils/Session.php on line 52


When I attempt to login, the previous messages are no longer there, but instead I see this: Notice: Undefined index: path in /var/www/vtigercrm/include/utils/Session.php on line 52

I'm still not able to login and there's nothing that's standing out as the problem.