wordpress plugin loop

[fisicx]

Having a go at building my first wordpress plugin. It's a very simple callback form. The short code works fine and the form display so quite chuffed I've got that far.

It's the form processing I'm struggling with.

These are the functions:

function verifyform() - does what it says on the box
function sendform() - builds the meassage and sends the email
function theform() - the form to be displayed
function error() - the error message window
function sentok() - the thankyou message window

function callbackloop() - this is the bit that is being awkward.

Here's what I want to do:

start the loop
show the form until submit
check the form
if errors display message and back to start of loop
if ok send the form and display message

This is where is gone wonky:

function callbackloop() {
theform();
$error = 1;
while ($error == 1) {
if (isset($_POST['submit']))
{
verifyform();
if ($error == 1) {
error();
theform();
}
}
}
sendform();
}

form display, I can enter data but pressing submit takes me to the 404 page. Obviously missing something but too thick to spot it.

Ta muchly

[Bonesnap]

Where is the form submitting to?

[fisicx]

Just a standard 'mailto'.

On sumission the form values get checked and a simple text email is sent.

The problem is the loop. The form works fine on other sites, it's just the wordpress plugin.

[fisicx]

Update.

All sorted.

It's those pesky semicolons!

[fisicx]

Cancal my last message, Mr Thicko here.

Plugin Options page loads and I can edit but when I save the settings the default s return.

Obviously something wonky.

This is how I set up the defaults:
function cbf_add_defaults() {
$tmp = get_option('cbf_options');
$arr = array("txt_1" => "Your Name");
add_option('cbf_options', $arr);
}

This is how I register the options:
function cbf_init(){
register_setting( 'cbf_plugin_options', 'cbf_options[txt_1]', 'cbf_validate_options' );
}

This is the options form:
<form method="post" action="options.php">
<?php settings_fields('cbf_plugin_options'); ?>
<?php $options = get_option('cbf_options'); ?>
<p>Enter the label: <input type="text" size="60" name="cbf_options[txt_1]" value="<?php echo $options['txt_1']; ?>" /></p>
<p class="submit"><input type="submit" class="button-primary" value="<?php _e('Save Changes') ?>" /></p>
</form>

All seems to be in place according to the codex and umpteen tutorials and articles. It's just not saving. I edit the label, hit submit and the default returns. When I actually use the plugin the lable doesn't show.

<?php echo get_option('cbf_options(txt_1)'); ?>

Is empty no matter how I format the get_options

Help?