Maybe I'm just being stupid, but don't you need to give a radius or box to at least one of the two? Here is a quote from the collisions documentation:
"Blitz has many ways of checking for collisions, as denoted by the method parameter. However, collision checking is always ellipsoid to something. In order for Blitz to know what size a source entity is, you must first assign an entity radius to all source entities using EntityRadius."
That is probably what is lacking.
"Blitz has many ways of checking for collisions, as denoted by the method parameter. However, collision checking is always ellipsoid to something. In order for Blitz to know what size a source entity is, you must first assign an entity radius to all source entities using EntityRadius."
That is probably what is lacking.