what type of particle shape are you using? blobby, tubes, multi streak, other?
what are you rendering in? Software, hardware, mental ray, other?
some particle shapes only show up in software and mental ray, while others only show up in hardware and mental ray
some only did (not now i think) only show up in hardware
that's a "Ch" pronounced as a "K"
Computer skills I should have:
Objective C, C#, Java, MEL. Python, C++, XML, JavaScript, XSLT, HTML, SQL, CSS, FXScript, Clips, SOAR, ActionScript, OpenGL, DirectX
Maya, XSI, Photoshop, AfterEffects, Motion, Illustrator, Flash, Swift3D