Density NOT provided

Good morning Bentley Community,

I am working on this model for spring hangers. when I run the program it tells me I didn't add density for some members. I went back, added density, and still tells me density has not been added and self weight will no be taken into consideration. I am wondering what I am doing wrong here. you can probably help with this issue. see code attached

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 09-Feb-16
JOB NAME XXX Spring Support
JOB CLIENT XXX
JOB NO 137051.01
JOB REV 0
ENGINEER NAME EGC
CHECKER NAME CLL
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
       1 0 0 0
       2 0 8.5 0
       3 0 8.5 -0.208
       4 0 8.5 0.208
       5 10 0 0
       6 10 8.5 0
       7 10 8.5 -0.208
       8 10 8.5 0.208
       9 20 0 0
      10 20 8.5 0
      11 20 8.5 -0.208
      12 20 8.5 0.208
      13 5 8.5 -0.208
      14 5 8.5 0.208
      15 15 8.5 -0.208
      16 15 8.5 0.208
      17 5 8.5 0
      18 15 8.5 0
MEMBER INCIDENCES
       1         1         2
       2         3         2
       3         2         4
       4         5         6
       5         7         6
       6         6         8
       7         9        10
       8        11        10
       9        10        12
      10         3        13
      11         4        14
      12         7        15
      13         8        16
      14        13         7
      15        14         8
      16        15        11
      17        16        12
      18        13        17
      19        17        14
      20        15        18
      21        18        16
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 4 7 TABLE ST W8X31
2 3 5 6 8 TO 17 TABLE ST C10X15
CONSTANTS
BETA 180 MEMB 10 12 14 16
SUPPORTS
1 5 9 PINNED
MEMBER OFFSET
16 17 END 0.333 0 0
1 4 7 END 0 -0.4167 0
10 11 START -0.333 0 0
***LOAD CASES***
LOAD 1 LOADTYPE Dead  TITLE SELFWEIGHT
SELFWEIGHT Y -1
LOAD 2 LOADTYPE Dead  TITLE WEST SUPPORT
JOINT LOAD
17 FY -10.407
LOAD 3 LOADTYPE Dead  TITLE EAST SUPPORT
JOINT LOAD
18 FY -11.848
LOAD 4 LOADTYPE Wind  TITLE WIND LOAD X - DIRECTION
JOINT LOAD
2 6 10 FX 0.2
LOAD 5 LOADTYPE Wind  TITLE WIND LOAD Z - DIRECTION
JOINT LOAD
2 6 10 FZ 0.2
LOAD 6 LOADTYPE Ice  TITLE ICE LOAD
MEMBER LOAD
1 TO 21 UNI GY -0.05
***LRFD LOAD COMBINATIONS***
LOAD COMB 10 1.4D
1 1.4 2 1.4 3 1.4
LOAD COMB 11 1.2D+0.5S
1 1.2 2 1.2 3 1.2 6 0.5
LOAD COMB 12 1.2D+1.6S+0.5WX
1 1.2 2 1.2 3 1.2 6 1.6 4 0.5
LOAD COMB 13 1.2D+1.6S+0.5WZ
1 1.2 2 1.2 3 1.2 6 1.6 5 0.5
PERFORM ANALYSIS PRINT ALL
PRINT ANALYSIS RESULTS
PARAMETER 1
CODE AISC UNIFIED 2010
PERFORM ANALYSIS PRINT ALL
FINISH

Thanks

Ernesto Costa