Blank tiles

[ludovico85]

Hi there,
I have a problem generating mbtiles. While saving tiles as directory structure works fine, when saving tiles with the MBtiles compression it generates blank tiles. All the bands have value equal to zero. However,
when I run the plugin MBTiles image extract which allows to extract the tiles as a directory structure from a MBtiles file, single tiles are correctly generated, even with the corrupted MBtiles generated by the QTiles plugin.
Thank you,
Ludovico