You need to format your USB stick on the Gw8. This will establish the folders needed.

On your PC transfer the styles to the Styles folder on the thumb drive. It is the ONLY way for the styles to get loaded to the user bank.

Bear in mind the GW8 will only load up to the max of the user bank, so if you copy across 200 styles for example, it will only load the first 128 ( I think its 128, it might be 100, I cannot remember).

The style conversion program from Roland is ONLY for converting MIDI files into a style.

To convert other brands you will still need something like EMC or similar.

Dennis