When previewing my orthomosaic in the color points mode, or looking at the final orthomosaic there are holes.
Probable Resolution #1:
Holes can occur if one or more sides of the triangles formed from the triangulation of the loaded points exceeds the Max ground triangle setting. Increase the value to allow the triangulation to stretch across the voids.
Probable Resolution #2:
Terrain with steep relief, such as mountainous terrain, can cause the edges of the imagery to move inward by great distances thereby creating holes between images due to not enough overlap of the images that cover the area.