For many years, WHONET has successfully used a simple file structure called dBASE for data storage. However in the past few years, some WHONET users have encountered compatibility problems with dBASE files with messages similar to the below.
For WHONET 2020, these problems have been completely resolved, so if you are encountering problems, you should update to the latest version which should completely resolve the compatibility problems.
If you encounter any of the above problems with WHONET 5.6, we also recommend that you
update to WHONET 2020, which will resolve the compatibility problems. However, if you
would like to continue using WHONET 5.6, then you can try the steps described at
this link to resolve the compatibility problems.
Please visit this link to troubleshoot other installation problems.