The My Rollitup link won't work

The button/link thing that says My Rollitup at the top right corner of page isn't working right. I click on it and it takes me to page that says this:

Trying to get contenttype class id from invalid contenttype '18' on line 533 in /opt/www/riu/vb4/vb/types.php
#0 /opt/www/riu/vb4/vb/item/contenttype.php(111): vB_Types->getContentTypeClass('18')
#1 /opt/www/riu/vb4/vb/item/contenttype.php(100): vB_Item_ContentType->loadTypeInfo()
#2 /opt/www/riu/vb4/vb/model.php(302): vB_Item_ContentType->loadInfo()
#3 /opt/www/riu/vb4/vb/model.php(43: vB_Model->Load()
#4 /opt/www/riu/vb4/vb/collection.php(533): vB_Model->isValid()
#5 /opt/www/riu/vb4/vb/collection/contenttype.php(274): vB_Collection->createItem(Array, 1)
#6 /opt/www/riu/vb4/vb/collection.php(44: vB_Collection_ContentType->createItem(Array, 1)
#7 /opt/www/riu/vb4/vb/model.php(34: vB_Collection->applyLoad(Object(mysqli_result), 1)
#8 /opt/www/riu/vb4/vb/model.php(302): vB_Model->loadInfo()
#9 /opt/www/riu/vb4/vb/collection.php(40: vB_Model->Load(false)
#10 /opt/www/riu/vb4/vb/collection.php(843): vB_Collection->Load()
#11 /opt/www/riu/vb4/packages/vbattach/attach.php(291): vB_Collection->valid()
#12 /opt/www/riu/vb4/includes/functions_user.php(12: vB_Attachment_Display_Multiple->__construct(Object(vB_Registry))
#13 /opt/www/riu/vb4/usercp.php(1056): construct_usercp_nav('usercp')
#14 /opt/www/riu/vb4/vbseo.php(1397): require('/opt/www/riu/vb...')
#15 {main}


Fatal error: Trying to get contenttype class id from invalid contenttype '18' on line 533 in [path]/vb/types.php in [path]/vb/vb.php on line 286


Any help would be much appreciated. I'm trying to get an avatar

It's working now...