I gather you didn't buy them from me then ???
Mine work fine.. no complaints..
the instructions you get with mine say:
Next, run the application by clicking: Start-> Programs-> MazdaEPC2-> MazdaEPC2
You will see the following window. Click the “Submenu” button at the bottom and select “Import Local Data” as shown.
Insert the Local Data CD and see the following image.
Enter the data paths as shown below, or use the “…” button to browse to the relevant folder on the Local Data CD.
Change the drive letter for the CD-Rom as necessary.
Make sure the boxes are ticked as shown.
Click Setup at the bottom to begin the import.
This will take a few minutes.
Then it should all work correctly.. I checked mine worked, then re-wrote all the instructions to make it a bit simpler to install..
p.s. mine are a fiver, delivered.. 
John