Cant see Customer details on web screen @time of LIVE Call

Hello,
I am using astguiclient-2.0.4 and asterisk-1.4.X
For few days my system was dialing very nicely with same packages but sudendly when my agents are logging @ that time they are getting LIVE calls but there is no information of customer in the vicidial.php page. Customer info is there in Database but not coming on vicidial.php page.
As of now i m not planning to 2.0.5 bcaz with 2.0.4 it was woking fine previously..
what could be the problem.
Thanks
I am using astguiclient-2.0.4 and asterisk-1.4.X
For few days my system was dialing very nicely with same packages but sudendly when my agents are logging @ that time they are getting LIVE calls but there is no information of customer in the vicidial.php page. Customer info is there in Database but not coming on vicidial.php page.
As of now i m not planning to 2.0.5 bcaz with 2.0.4 it was woking fine previously..
what could be the problem.
Thanks