To my knowledge, there is no patch for Vista, only the latest version 1.09, which does not solve the problem for me.
The only patch offered is a link to a Microsoft update for the DAC; this patch has no effect on Vista where the MDAC is replaced by the WDAC at version 6.0.
I submitted the case to Bayo support; below is their response... I want to clarify that, contrary to Bayo support's assumptions, my Vista version was not installed with a low-quality master installation OS, as I performed a complete installation from a Vista Premium Edition CD.
For my part, I would believe in the 3D cartographer when the developers better adapt to Vista's evolutions; it's a shame, it's a nice product.
The issue is caused by the DAC module of your operating system.
When the Bayo software tries to open the database, it will use a series of .dll files.
Either the necessary .dll file(s) is missing, or its integrity is not the same as expected by the developers, hence the inability to open the database file.
The MDAC error is a standard error message in the Bayo software code that has not been updated for Vista. However, what it indicates is partially true, the DAC module on your machine is not configured the same way as the full version of the DAC 6.0 module that Microsoft developed for Vista.
This can be explained if you are using a laptop with Vista installed via a Master installation; manufacturers tend to minimize installation sizes.
Currently, it is impossible to download DAC 6.0 from the Microsoft site for a reason I do not know.
I may have a beginning of an answer regarding the .dll files that could pose a problem at the following link: https://support.microsoft.com/fr-fr/help/837150
Unfortunately, I am unable to get your Bayo software to work on this machine at the moment. As long as it is not possible to download the complete version of the DAC module, we will be at an impasse.
However, I want to clarify that the problem does not come from the Bayo software, which works perfectly on any version of Windows Vista as long as the DAC 6.0 module is installed in its entirety