HV DVD_ts folder found in build location

Hi guys,
Burning DVDsp files all day and suddenly when I hit the burn button I received a message saying HV DVD_ts folder found in build location remove from build location in order to burn the disk. My question is where is the build Location? I went to the library- cache- dvd studio pro and deleted an hvdvd_ts file but that didnt do it.

Thanks for any help on this
Jim

Found another one , deleted it, everything works now.

I looked in my Library Cache DVDSP but didn't see the Video_TS file...did you find it somewhere else?