When Dosadi technical support receives a problem report about EZTwain - assuming the problem is not an installation or documentation problem - our most common first action is to request a log file. EZTwain Pro can generate a detailed diagnostic log file. EZTCheck always generates a log file for each test run, and Twerp32 has a menu option to enable logging.

As a programmer, just add the following call before any other EZTwain calls:

TWAIN_LogFile(1);
(Your programming language syntax may be different.)

Run the malfunctioning program again in a way that reproduces the problem. Then collect and examine the resulting logfile: c:\eztwain.log

You can learn quite a lot by examining this log file - It reports the version of EZTwain being used, and the location of the EZTwain DLL (in case there are multiple copies on a system). The log will show if any command or request to the TWAIN device returned failure, and will list the detailed parameters of any transferred images. Licensing failures also are logged.

If you are having trouble making EZTwain work and you decide to contact Dosadi support, we suggest you generate a c:\eztwain.log file and send it along as an attachment.