Debug version of PmTWAIN data source will write logging information
about TWAIN level in 'PmTwainSrc.log' file in %temp% folder.

To enable to use debug version:
- copy  'twaindidapisrc.ds.debug' file to 'C:\WINDOWS\TWAIN_32\Planmeca' folder
- rename original 'twaindidapisrc.ds' as i.e. 'twaindidapisrc.ds.orig'
- rename 'twaindidapisrc.ds.debug' file as 'twaindidapisrc.ds'