[Serusers] cannot login with serweb

Hi, i have installed ser 0.8.12 and serweb fro CVS. Configuration seems OK because i can get the page with correct image for login etc. I have already create users in ser and i can also use this user in sip UA e.g. X-lite to register in ser server. But i can not login in user_interface/index.php. I got always "Bad username or password" on the top of the page. Can anybody help me? thank you in advance ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Jie Zhou Rechenzentrum Universität Stuttgart Allmandring 3a D-70550 Stuttgart Telefon: ++49 (711) 685-5531 Telefax: ++49 (711) 678-8363 E-Mail: zhou(a)rus.uni-stuttgart.de ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~