If parts of a shadow that should be there is missing?

Look at your lights carefully. Imagine in your head where the shadows should be.

Then look through your shadowcams. Are you seeing what you should see for each light?
Fine tune the positioning of the shadowcams for each light if they do not match up.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!