Low DM mass, high nucleon mass mu issue

[LaenExplain]

Transgen hard crashes when using isotopes 12 and greater for low masses. Even though 0.2 is much lower than the evaporation limit, can it be more graceful in the exit?

Sample output:

 mx:   0.20000000000000001      sigma_0:   1.5848931924611239E-050 cm^2
 niso =           12
 xout    9.2744503269365248E-003 xin min    1.0000000000000000E-002
STOP Error in interpolation: xout < min(xin)```