en mi web, casi en todas las secciones tiene errores, tipo este: Parse error: parse error, expecting `')'' in /home/webcindario/sakuranosenshi/includes/functions_post.php on line 735

Warning: Cannot modify header information - headers already sent by (output started at /home/webcindario/sakuranosenshi/themes/NatPinky/theme.php:260) in /home/webcindario/sakuranosenshi/includes/sessions.php on line 249

Warning: Cannot modify header information - headers already sent by (output started at /home/webcindario/sakuranosenshi/themes/NatPinky/theme.php:260) in /home/webcindario/sakuranosenshi/includes/sessions.php on line 250

Warning: Cannot modify header information - headers already sent by (output started at /home/webcindario/sakuranosenshi/themes/NatPinky/theme.php:260) in /home/webcindario/sakuranosenshi/modules/Private_Messages/index.php on line 1892

como lo arreglo?

A ver ¿con otro theme funciona bien? SI/NO