Hi everybody, merry xmas

I installed community builder and the My Albums plugin but when I activate it I get the following errors:

When I click on My Profile (the CB mandatory menu item) :

Notice: Undefined index: format in /path-to/router.php on line 10
Notice: Undefined index: format in /path-to/router.php on line 440
Notice: Undefined index: format in /path-to/router.php on line 455
Notice: Undefined index: format in /path-to/router.php on line 470
Notice: Undefined index: format in /path-to/router.php on line 490
Notice: Undefined index: format in /path-to/router.php on line 581

and when I click the My Albums tab:

Notice: Undefined index: format in /path-to//router.php on line 10
Notice: Undefined index: layout in /path-to//router.php on line 10
Notice: Undefined variable: task in /path-to//router.php on line 13
Notice: Uninitialized string offset: 0 in /path-to/com_muscol/views/artist/tmpl/detailed_album.php on line 27
Notice: Trying to get property of non-object in /path-to/components/com_muscol/views/artist/tmpl/detailed_album.php on line 27
Notice: Uninitialized string offset: 0 in /path-to/components/com_muscol/views/artist/tmpl/detailed_album.php on line 29
Notice: Trying to get property of non-object in /path-to/components/com_muscol/views/artist/tmpl/detailed_album.php on line 29
Notice: Uninitialized string offset: 0 in /path-to/components/com_muscol/views/artist/tmpl/detailed_album.php on line 29
Notice: Trying to get property of non-object in /path-to/components/com_muscol/views/artist/tmpl/detailed_album.php on line 29
Notice: Uninitialized string offset: 0 in /path-to/components/com_muscol/views/artist/tmpl/detailed_album.php on line 30
Notice: Trying to get property of non-object in /path-to/components/com_muscol/views/artist/tmpl/detailed_album.php on line 30

Germi can it be because the customization we made?

Thanks in advance
Dimitris