After importing from UBB Classic, some people had invalid avatars (I don't know why). Trying to remove these using the Member Management section of the control panel returned the following error:

Code
UPDATE ubbt_USER_PROFILE SET USER_EXTRA_FIELD_1 = '10 so far' , USER_EXTRA_FIELD_2 = 'myuser', USER_EXTRA_FIELD_3 = 'here and there' , USER_EXTRA_FIELD_4 = 'my own' , USER_EXTRA_FIELD_5 = '' , USER_CUSTOM_TITLE = '' , USER_NAME_COLOR = '' , USER_REAL_EMAIL = 'myemail@myemail.com' , USER_DISPLAY_EMAIL = 'myemail@myemail.com' , USER_LOCATION = 'usually in the kitchen' , USER_OCCUPATION = 'full time mom' , USER_HOBBIES = 'just about everything' , USER_HOMEPAGE = '' , USER_SIGNATURE = 'x' , USER_DEFAULT_SIGNATURE = 'x' , USER_ICQ = '' , USER_YAHOO = '' , USER_MSN = '' , USER_AIM = '' , USER_PUBLIC_BIRTHDAY = 0 , USER_TIME_FORMAT = 'd/m/y | h:i A' , USER_TIME_OFFSET = '0' , USER_TOPIC_VIEW_TYPE = 'flat' , USER_TOPICS_PER_PAGE = '10' , USER_POSTS_PER_TOPIC = '10' , USER_SHOW_SIGNATURES = 'yes' , USER_VISIBLE_ONLINE_STATUS = 'yes' , USER_ACCEPT_PM = 'yes' , USER_NOTIFY_ON_PM = 'On' , USER_FLOOD_CONTROL_OVERRIDE = '-1' , USER_AVATAR = '',USER_AVATAR_WIDTH= '' ,USER_AVATAR_HEIGHT= '' WHERE USER_ID = '3' 

Incorrect integer value: '' for column 'USER_AVATAR_WIDTH' at row 1

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