When merging several MDF files, why does this error occur: Error -28 at calling Convert of MdfMerge.dll: Exceeds maximum file size for MDF files ?
In MDF version 3.x there is a file size limit of 2 / 4 gigabytes for one MDF file. If the merging exceeds the maximum file size, more than one MDF file has to be created.
Therefore we recommend to use MDF version 4.x. MDF 4.x allows files of any size (264 bytes) to be written.
For more details regarding the MDF format, see: https://www.vector.com/int/en/products/application-areas/ecu-calibration/measurement/mdf/