Solved Invalid heightmap? Thoughts?

[CNCModeller]

Hi All,
Been having some adhesion problems with a large dia dense print (720T GT2 Pulley) so decided to try mesh compensation.

Not sure what's wrong with this heightmap? DWC says its invalid?

Its a circular bed dia 600mm with the origin at the centre, on a polar printer.

Both axes moved albeit its a little tricky to follow given the polar co-ordinate motion.

Thoughts?

Cheers
BPM

RRF 3.4 beta 3 on a duet 3 Mini+

Commands used:

M557 R250 S100
G29

Console:
G29
21 points probed, min error -0.152, max error 0.131, mean -0.065, deviation 0.062
Height map saved to file 0:/sys/heightmap.csv

Heightmap:

RepRapFirmware height map file v2 generated at 2021-09-27 19:00, min error -0.152, max error 0.131, mean -0.065, deviation 0.062
axis0,axis1,min0,max0,min1,max1,radius,spacing0,spacing1,num0,num1
X,Y,-200.00,200.10,-200.00,200.10,250.00,100.00,100.00,5,5
0, -0.066, -0.084, -0.055, 0
-0.100, -0.025, -0.010, -0.117, -0.090
-0.087, 0.045, 0.131, -0.112, -0.152
-0.095, -0.043, -0.009, -0.120, -0.107
0, -0.093, -0.095, -0.087, 0

[CNCModeller]

Solved, old version of DWC (3.2 not 3.4) , DOH!