Test Print Works but Creality Print export fails

Ender 3 V3 SE 3D arrived today with Soleyin Ultra PLA 3D Printing Filament 1kg

I printed 1-shovel test file, no problem.
I installed Creality Print, selected Ender-3 SE-0.4 nozzle
It default to Smooth PEI Plate (do I have this?)
Select CR PLA
Slice and print

It fails. Pops right off the plate after a few rows.

Debug

  1. Print test shovel again. No problem with adhesion
  2. Note that shovel prints at 205 nozzle and 60 plate. Change my filament settings to match. Pops off
  3. Watch YouTube. Add 5mm brim. Pops off

What do I try next?

Steve

Well… solved my own problem.

https://all3dp.com/2/3d-printing-first-layer-problems-how-to-make-it-perfect/#google_vignette

#2 - clean your surface with Isopropyl Alcohol.

Who knew?

Hope this helps someone else!