Informix 7.30 problems with BDE in CGI Application

Hi

I'm working on a CGI app for IIS 2.0. When using ODBC driver for Informix
everything is OK. But when a BDE driver is used on the 2-nd action Server
Error 500 is raised with message "Connection does not exist".

There  are a TDataBase and TSession components. TDataBase has KeepConnection
set to True and TSession has AutoSessionName set to True, too. When database
has been opened in design mode there is no problems with connection to
Informix. Also with ODBC drivers for Informix there is no problems. The
DataBase is opened only once in TWebModul.OnCreate.

Please help
and thanks in advance