Problem with menu in AdminCP

[Marcin Kalak]

Menu in AdminCP does not appear. In debug mode errors occurred:

Debug: Error 
array_keys() expects parameter 1 to be array, null given 
occurred in file /core/includes/adminfunctions_navpanel.php on line 166
Trace
[FONT=inherit]Function handleError in file line[/FONT]
[FONT=inherit]Function array_keys in file /core/includes/adminfunctions_navpanel.php line 166[/FONT]
[FONT=inherit]Function print_nav_panel in file /core/admincp/index.php line 558[/FONT]
[FONT=inherit]Function require_once in file /includes/api/interface/collapsed.php line 118[/FONT]
[FONT=inherit]Function relay in file /includes/vb5/frontend/controller/relay.php line 29[/FONT]
[FONT=inherit]Function admincp in file line[/FONT]
[FONT=inherit]Function call_user_func_array in file /index.php line 72[/FONT]

[Mark.B]

What version are you running?

[Marcin Kalak]

5.1.2 PL3

[BirdOPrey5]

Is this a new install? If not, did anything change when it stopped working?

Web server is Apache, IIS, or something else?

[Marcin Kalak]

Nothing changed. We did update from version 5.0.5.

[BirdOPrey5]

Nothing changed. We did update from version 5.0.5.

I'm sorry, but did it work after you upgrade from 5.0.5 or it stopped working when you upgraded to 5.0.5?

[Marcin Kalak]

Stopped working after upgrading from 5.0.5 to 5.1.2

[Lynne]

What version of PHP is on your server?

[Marcin Kalak]

PHP Version 5.5.14

[Mark.B]

Please downgrade to php 5.4...vB5 is not yet fully certified for php 5.5 use (though it's coming soon0.