I am having the same problem leggs is/was having. I'm relatively new in shake, likely being the only virginia highschool kid owning a registered copy. one of my work team's maya guys found this site and got excited over the great variety of discussion, support and sharing he saw and sent me to it. i emediately downloaded every macro and plugin for shake that looked neat went to town and back playing with them.
having accomplished a flock of glowing radioactive birds flying through a beautiful, red, candy rain on to a majestic fake/shake sunset, i threw a render to simmer and went to bed.
the next morning i was near tears when i woke to find 400 frames of "Missing Macro".
you'd think i'd have made a flipbook at some point or another and figured this out but no. essencially i have hit the same road gator as Leggs, and have no idea in my Shake .ui .h ignorance what Christinechamp is talking about and would love to have anyone more expirienced in this to explain it.
thanks in advance for any and all replies,
Dave