ok Brought up the dxf that you put up and looks great in Lcam, does take awhile to load, but not more than a couple minutes.
Post the g-code, and then open it in Mach3, Now it only looks like one curved line.
Dry run it and yes it is only one curved line. here is the gcode posted from Lcam.
N5 (File Name = trace3 on Wednesday, October 21, 2009)
N10 (Default Mill Post)
N15 G91.1
N20 G0 Z1.0000
N25 M3
N30 X73.3725 Y28.4523
N35 Z0.1000
N40 G1 X73.3181 Y28.4086 Z0.0000 F60.00
N45 X73.2554 Y28.3782
N50 X73.2122 Y28.3614
N55 X73.0357 Y28.3084
N60 X73.0119 Y28.3024
N65 X72.9864 Y28.2962
N70 X72.9591 Y28.2898
N75 X72.8136 Y28.2590
N80 X72.7302 Y28.2433
N85 X72.6347 Y28.2266
N90 X71.8695 Y28.1287
N95 X71.3574 Y28.0886
N100 X71.0643 Y28.0741
N105 X70.2825 Y28.0758
N110 X70.1819 Y28.0829
N115 X70.0782 Y28.0933
N120 X69.8591 Y28.1330
N125 X69.6495 Y28.2145
N130 X69.5818 Y28.2468
N135 X69.4927 Y28.2920
N140 X69.3754 Y28.3551
N145 X68.9180 Y28.6272
N150 X68.6203 Y28.8200
N155 X67.4778 Y29.6572
N160 X67.3327 Y29.7782
N165 X67.1812 Y29.9112
N170 X67.1048 Y29.9818
N175 X67.0278 Y30.0567
N180 X66.8973 Y30.1940
N185 X66.7720 Y30.3360
N190 X66.5314 Y30.6283
N195 X66.3761 Y30.8275
N200 X66.2890 Y30.9425
N205 X66.2429 Y31.0041
N210 X66.1387 Y31.1458
N215 X66.0837 Y31.2218
N220 X65.7973 Y31.6318
N225 X65.4380 Y32.1933
N230 X65.3945 Y32.2676
N235 X65.2174 Y32.6194
N240 X65.1933 Y32.7189
N245 X65.1648 Y32.8675
N250 X65.0731 Y32.9878
The line dry runs great but I dunno why the whole drawing does not load out from Lcam
Maybe something in my Lcam is funky?