I encountered the same problem with Calibre 0.8.60 on Win7 x64 with both Kobo Touch firmware 1.9.17 and firmware 2.0.0. In both cases, despite the error message that the Kobo database was not supported, Calibre was still able to transfer ePub files to the Kobo.
I encountered the same problem with Calibre 0.8.60 on Win7 x64 with both Kobo Touch firmware 1.9.17 and firmware 2.0.0. In both cases, despite the error message that the Kobo database was not supported, Calibre was still able to transfer ePub files to the Kobo.