Solution:

The file "GENIE.INI" in directory "Windows" recorded all the environment and parameter of VisiDAQ. And there's a session that records the "Installable ISAMs" parameter. For example, the description in the session is: [Installable ISAMs] dBASE III=C:\WINDOWS\SYSTEM\xbs110.dll dBASE IV=C:\WINDOWS\SYSTEM\xbs110.dll Please verify the path of them, and verify if the file "xbs110.dll" is exist or not? If above description can't help any, please delete the "GENIE.INI" and re-install the VisiDAQ again.