No need to apologize..thanks for trying to help me, and I'm sorry I wasn't clearer..I thought what you were suggesting above was to do this: I installed 18 on the BIAB2018 stick-drive I received from BIAB..instead of on my pc, I installed it on the drive..it opened up and accessed all my realtracks, and played songs..the song that wouldn't play at 105bpm (but would at 100)used a style that I couldn't find (even though it was on my pc when 2018 was on it, so I had to copy and paste it from my 19 directory on my pc..unfortunately, it and other songs I tried, played back with the same results as BIAB 2019 32 and 64-bit. I tried contacting tech-support today but was unable to get through..maybe it's not just me? Again, appreciate your time.