[Serusers] help for "parse_orig_uri"

I compiled & installed ser-0.9.7. But cannot start it. The Log is: 0(28624) loading module /usr/local/lib/ser/modules/acc.so 0(28624) ERROR: load_module: could not open module </usr/local/lib/ser/modules/acc.so>: /usr/local/lib/ser/modules/acc.so: undefined symbol: parse_orig_uri 0(28624) parse error (41,13-14): failed to load module 0(28624) set_mod_param_regex: No module matching acc found | 0(28624) parse error (43,19-20): Can't set module parameter 0(28624) set_mod_param_regex: No module matching acc found ... And in compiling log, there is a acc.c:291: warning: implicit declaration of function 'parse_orig_uri' it seems that I lost some devel packages. who can tell me in which package defined "parse_orig_uri"? My OS is CentOS 5.1 x64 Thank you very much! Liu Wenlong -- aRES iN aNYWhere