[Error Message] Error on registeration and and adding a forum

[venomgrills]

Hey!
My forum was working fine until yesterday when I got this error message on registeration:

1364 - Field 'default_tab' doesn't have a default value


MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1364 - Field 'default_tab' doesn't have a default value
Query:
INSERT INTO venomusers (username,password,salt,loginkey,email,postnum,threadnum,avatar,avatartype,usergroup,additionalgroups,displaygroup,usertitle,regdate,lastactive,lastvisit,website,icq,skype,google,birthday,signature,allownotices,hideemail,subscriptionmethod,receivepms,receivefrombuddy,pmnotice,pmnotify,showimages,showvideos,showsigs,showavatars,showquickreply,showredirect,tpp,ppp,invisible,style,timezone,dstcorrection,threadmode,daysprune,dateformat,timeformat,regip,lastip,language,showcodebuttons,sourceeditor,buddyrequestspm,buddyrequestsauto,away,awaydate,returndate,awayreason,referrer,referrals,buddylist,ignorelist,pmfolders,notepad,warningpoints,moderateposts,moderationtime,suspendposting,suspensiontime,coppauser,classicpostbit,usernotes,dst,avatardimensions,ougc_awards) VALUES


Can anyone please guide me to the solution?
Thanks in advance.