Help interpreting BatchPCB DRC error

Can anyone help me to figure out what the DRC finds wrong with my design? The DRC output is pasted below.

Kind regards,

Tom

unmatched 274X paramblock OFA0B0 - len 6
Macro Name = OC8
Macro Consuming 5,1,8,0,0,1.08239X$1,22.5 [2]
PUSH 1.000000
PUSH 8.000000
PUSH 0.000000
PUSH 0.000000
PUSH 1.082390
FETCH 1
MUL
PUSH 22.500000
PRIM 5
Parse_OK
Beginning GCODE run
Ending GCODE run
Created 977 polygons
Found 0 errors
Partitioning....
Grouping...
Distance testing
MergeCount: 965
tests: 113687
Board boundaries: Rect: [-0.232000,-0.066000] -> [2.768000,2.534000], w: 3.000000, h: 2.600000
Found 12 groups
lengthdb size 0
DRC space fail: [0x24bf750 0x24bf7f0] 0.005400 - 0.006000
DRC space fail: [0x24bf7f0 0x24bf750] 0.005400 - 0.006000
------------------------------------------------
exit status: 255
DRC put out 27 lines of logging code