I consider buying either a Spark or two software packages (Spark Vintage Drum Machines + Prophet V) shortly but get confused that I found a forum where there`s statements that the integration in 64 Bit environments is not flawless or at least delicate or is even impossible. I use the latest REAPER version (4.401) as DAW in 64 bit, based on Win 7 (64 bit). Will I face such problems in any of the combinations hardware/software? Thanks for any comment on this issue.