error -7709

Hello I try to install an application on our pc. The software has a feature to connect to several different databases. To connect to *.txt, *.xls, and so on are not the problem, but If I try to connect to our informix-database there is every time a error-message. If I try to connect via Access to Informix no problem, only with the software I have problems. I installed this software on different pc with different Informix-CLI but every time the same. (Windows95, Windows98, with patches). The programmer of the software has no idea. But I need this feature. this is the error-message: following error is occured: reserved error (-7709); there are no additional information about this error. Number: 3000 Or so? the original message is in german: Folgender Fehler ist aufgetreten: Reservierter Fehler (-7709); es gibt keine Meldung f'r diesen Fehler. Number: 3000 I know this informations a quite vague, but perhabs somebody could help me. Thanks Thomas Hartmann