1) the file that generates the captcha graphic:
WAVT_CaptchaSecurityImages.php
is giving a 500 server error, make sure the permissions for the WA_ValidationToolkit/ folder and all files under it are set to 755
2)
in the webassist/plugins/caltalog/featuredbox.php file, change:
<h1><?php echo WA_getCMSContent($database_PowerStoreConnection, $PowerStoreConnection, 'Featured Pod' , 'Header'); ?></h1>
to:
<h1><?php echo str_replace(array("<p>","</p>"),"",WA_getCMSContent($database_PowerStoreConnection, $PowerStoreConnection, 'Featured Pod' , 'Header')); ?></h1>
in the webassist/plugins/popularbox.php file change:
<h1><?php echo WA_getCMSContent($database_PowerStoreConnection, $PowerStoreConnection, 'Popular Pod' , 'Header'); ?></h1>
to:
<h1><?php echo str_replace(array("<p>","</p>"),"",WA_getCMSContent($database_PowerStoreConnection, $PowerStoreConnection, 'Popular Pod' , 'Header')); ?></h1>
and in the in the webassist/themes/bannatree/templates/index.dwt.php file, change:
<h1><?php echo WA_getCMSContent($database_PowerStoreConnection, $PowerStoreConnection, 'Middle Pod' , 'Header'); ?></h1>
to:
<h1><?php echo str_replace(array("<p>","</p>"),"", WA_getCMSContent($database_PowerStoreConnection, $PowerStoreConnection, 'Middle Pod' , 'Header')); ?></h1>
3) the problem with the checkout is the SSL Certificate for your website. It is registered for the following domains:
*.startlogic.com , startlogic.com
you will need to contact the host to have the ssl certificate issue corrected.