  This paper primarily addresses the question of whether recent lensing
observations probing the small scale structure in the universe are consistent
with the LCDM model. A conservative approach is taken where only the most
difficult to explain cases of image flux anomalies in strong lenses are
considered. Numerical simulations are performed to compare predictions for the
LCDM small scale mass function with observed flux ratios. It is found by
simulating several represent cases that all the cusp caustic lens anomalies and
the disagreements between monochromatic flux ratios and simple lens models
might be explained without any substructure in the primary lenses' dark matter
halos. Intergalactic LCDM halos are enough to naturally explain these cases.
However, thus far, spectroscopic gravitational lensing observations require
more small mass halos (~ 10^6 Msun) than is expected in the LCDM model.
