Raft won't print on high in Flashprint

[Freeform3D]

Hi, I'm trying to print a character bust, and I can get it to work on standard resolution ok. If I set the resolution to high, for some reason the rafts will only be laid down for the supports, but not the bust. SO when it gets to printing the bust itself it just starts printing thin air, it basically fails to print the character. I have a groups of support rafts dotted on the platform, but no bust, so I cancel the print.

Whats the difference in high resolution setting? Is it something to do with how I have assigned the extruders? Raft and supports are both on the left extruder. Again, this works ok on standard print resolution but no on high.

Thanks for any help.
Lloyd

[car3less]

what software are you using to slice your model?

[Freeform3D]

I'm using flashprint with the flashforge dreamer printer.