Insanely irresponsible Animations, Fixing them? (FBX)

MANY (at least 10) of my FBX files keep throwing the No animation found error. I have tried changing the Rig types and literally every other combination of Mesh, Rig, and Animation setting I can click to no avail. The systems I've tested these files with are both Fantasy AI 2.0 and UFPS. Both have suddenly started this S''* for no apparent reason...I've changed nothing...Literally nothing. What am I doing wrong? It's interesting to note that if I loop the animations and set them to only one animation per model they work. What the f#%€?