Thank you drByte

I tried that but no clue

I re - installed a new band-signup files and I get the blank page

when i show the errors, when i press send button, I get:

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/jeshop/public_html/includes/local/configure.php:1) in /home/jeshop/public_html/includes/functions/sessions.php on line 108

Notice: Constant OFFICE_IP_TO_HOST_ADDRESS already defined in /home/jeshop/public_html/includes/languages/french/email_extras.php on line 56

Notice: Constant OTHER_IMAGE_ already defined in /home/jeshop/public_html/includes/languages/french/other_images_names.php on line 35

Notice: Constant OTHER_IMAGE_ already defined in /home/jeshop/public_html/includes/languages/french/other_images_names.php on line 36

Notice: Constant OTHER_IMAGE_ already defined in /home/jeshop/public_html/includes/languages/french/other_images_names.php on line 37

Notice: Constant OTHER_IMAGE_ already defined in /home/jeshop/public_html/includes/languages/french/other_images_names.php on line 38

Notice: Constant BUTTON_IMAGE_GOTO_PROD_DETAILS already defined in /home/jeshop/public_html/includes/languages/french/other_images_names.php on line 44

Notice: Constant BUTTON_GOTO_PROD_DETAILS_ALT already defined in /home/jeshop/public_html/includes/languages/french/other_images_names.php on line 68

Warning: Cannot modify header information - headers already sent by (output started at /home/jeshop/public_html/includes/local/configure.php:1) in /home/jeshop/public_html/includes/init_includes/init_templates.php on line 78

Notice: Constant HEADING_TITLE already defined in /home/jeshop/public_html/includes/languages/french/band_signup.php on line 23

Notice: Undefined variable: email_text in /home/jeshop/public_html/includes/modules/pages/band_signup/header_php.php on line 194

Notice: Undefined index: EMAIL_TO_NAME in /home/jeshop/public_html/includes/functions/functions_email.php on line 83

Notice: Undefined index: EMAIL_TO_ADDRESS in /home/jeshop/public_html/includes/functions/functions_email.php on line 84

Notice: Undefined index: EMAIL_SUBJECT in /home/jeshop/public_html/includes/functions/functions_email.php on line 85

Notice: Undefined index: EMAIL_FROM_NAME in /home/jeshop/public_html/includes/functions/functions_email.php on line 86

Notice: Undefined index: EMAIL_FROM_ADDRESS in /home/jeshop/public_html/includes/functions/functions_email.php on line 87

Notice: Undefined variable: email_reply_to_address in /home/jeshop/public_html/includes/functions/functions_email.php on line 219

Notice: Undefined variable: email_reply_to_name in /home/jeshop/public_html/includes/functions/functions_email.php on line 220

Warning: Cannot modify header information - headers already sent by (output started at /home/jeshop/public_html/includes/local/configure.php:1) in /home/jeshop/public_html/includes/functions/functions_general.php on line 44

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Your help is appreciated , it was working and I have no clue what caused this