Just installed NextBBS.  Whenever I try to view a profile, I get this error:

Error type:	E_USER_ERROR
Message:	Smarty error: [in profile.tpl line 49]: syntax error: (secure mode) 'null' not allowed in if statement (Smarty_Compiler.class.php, line 1354)
Location:	/home/valerie/public_html/bbs/smarty/Smarty.class.php (line: 1083)

What info do you need to help me find the problem?

---