please help!! white screen joomla

hello in my site... www.sucasainmobilairia.com
i use osp 2.4 and joomla 3

i install phoca download, xml map, BK multithumb and i try to use 404sef

but 404sef dont work verywell...

and now i have troubles whit some page i acces as register user and my site crash in a white page... i put in my dev site all the error to full, i put the joomla in dev mode alert error... and nothing...

white screen.... and any error on sight...

please gime advise to fix this..

the last thing i malking a upload of the sistem ... joomla first ant later ... osp 2.4 to 2.6.1

thanks...

Hi Elkin,
Please submit ticket and send super admin account. I will check the problem between Sh404sef and OS Property component for you
By the way, the site: www.sucasainmobilairia.com is no long exists
Thanks
Dam

its

www.sucasainmobiliaria.com

i put the user and password in the ticket... thanks...

my mistake