I don't know what is going on, I assume you have to most current version.
When I run this on the data you gave me:

SurfClust -spec lh_sm.spec -surf_A lh_std.smoothwm.asc -input ANOVA_lh_All.1D 7 -rmm 10 -update 10 -thresh_col 7 -thresh 2.0 -amm2 5

I get the following result:
#Col. 0 = Rank
#Col. 1 = Number of nodes
#Col. 2 = Total area (units^2)
#Col. 3 = Mean value
#Col. 4 = Mean absolute value
#Col. 5 = Central node
#Col. 6 = Weighted central node
#Col. 7 = Minimum value
#Col. 8 = Minimum node
#Col. 9 = Maximum value
#Col. 10 = Maximum node
#Col. 11 = Variance
#Col. 12 = Standard error of the mean
#Command history:
#SurfClust : SurfClust -spec lh_sm.spec -surf_A lh_std.smoothwm.asc -input ANOVA_lh_All.1D 7 -rmm 10 -update 10 -thresh_col 7 -thresh 2.0 -amm2 5
# Rank num Nd Area Mean |Mean| Cent W Cent Min V Min Nd Max V Max Nd Var SEM
1 8766 3418.92 2.360 2.360 37520 37520 2.000 33541 3.957 51828 0.084 0.003
2 2035 701.79 2.461 2.461 152065 152065 2.000 101203 3.567 137409 0.097 0.007
3 199 100.29 2.244 2.244 81880 81880 2.003 82480 2.731 82261 0.032 0.013
4 281 87.69 2.347 2.347 102866 102866 2.000 104158 3.040 99773 0.062 0.015
5 250 74.44 2.210 2.210 115931 115931 2.000 116764 2.588 116080 0.020 0.009
6 134 40.00 2.207 2.207 67793 67793 2.004 67682 2.722 67678 0.023 0.013
7 72 34.34 2.289 2.289 140483 140483 2.007 139586 2.984 140731 0.059 0.029
8 57 31.37 2.350 2.350 70680 70680 2.005 69994 3.056 70894 0.091 0.040
9 56 29.74 2.209 2.209 46786 46786 2.008 46306 2.782 46017 0.030 0.023
10 33 16.59 2.151 2.151 63774 63774 2.004 62891 2.377 62698 0.012 0.019
11 21 10.18 2.234 2.234 52878 52878 2.013 53115 2.587 53219 0.023 0.033


The program should not be crashing no matter what you do but please make sure you are running the current version. If you are still having problems, create an archive with the exact data you are using and send it over.

cheers,
-z