Particle rotation normal issue with particle orientation Is there a way to get the particles in the correct orientation to the emitter and not rotated at varying angles? (see image)

eg. butterflies sitting on a cube's surface.

My relevant settings are:


Emit From > Faces
Rotation > Initial Orientation > Normal
Render > Group > Rotation (selected)


v2.73

In the image example it looks like the normal interpolates between each adjoining face's normal to rotate the particle. I'm also noticing that when the object rotates the particles spin which is also an unwanted effect. Is the normal acting as the axis for a quaternion?



I cannot recreate this interpolation problem with a cube primitive (gives correct behavior) but when rotating the cube (emitter), the faces with the z-axis, causes the particles to move. cube created in v.276.
Some Suggestions


I have experienced some latency and strange behavior with Particles.  Yet I do not want to produce a defect report.  Sometimes I have closed and reopened file.  Move the timeline to frame 0 and switched from Vertex to Face to Volume emission.  I have been very hesitant to inquire about this.  I have felt this latency has suddenly function as expected.  Misleading latency.  Could be interpreted as superstitious.
For the text to mesh.  Edit Mode, Use vertex remove doubles.
Object Mode,  Remesh Modifier and Apply.  So your faces are even size and no tedious hand modeling.
Edit Mode, With the faces from above in Faces Mode.  Select all Faces.  Sort Elements Randomize.
Note my Emission Panel Setting are a bit different than yours.
For the current settings and the simple scaled cube ... a rotation in EDIT mode can rotate the particle.




Image above shows the results of Remesh Modifier with Apply.

Other Edits May Follow.