MYBB 1.8 template conditionals?

[Seabody]

Did you make any edits?

Reason I ask is because I installed a freshly downloaded copy of Template Conditionals. Made no edits to the plugin. I get the following odd error:

Parse error: syntax error, unexpected ')' in C:\wamp\www\divergentfans\inc\functions_user.php(468) : eval()'d code on line 21

I've no clue how this occurs, given my syntax is currently this (if clause is just a placeholder, was testing when error first occured):

Code:

<if 1==0> <div>Hello, World!</div> </if>

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Line 21 in functions_user is the following piece, from the user_exists() function:

PHP Code:

$query = $db->simple_select("users", "COUNT(*) as user", "uid='".(int)$uid."'", array('limit' => 1));

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And line 468 (for reference) is this, from the usercp_menu_messenger() function:

PHP Code:

eval("\$usercpmenu .= \"".$usercp_nav_messenger."\";");

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The template I am editing is usercp_nav_messenger. Running an almost vanilla MyBB install, except the theme is different.