ActionScript 2.0 :: Button Animation Effect - Target Not Found Error

In my animation I have a button utilizing the tellTarget command to activate another movieclip (which contains an effect for the button). The button and the "effect movieclip" (each on their own layer) are inside a movieclip called MC_mm_buttons which again is inside the main .swf

When I test my .swf the output window gives me this error message:
Target not found: Target="/test" Base="_level0.mc_mm_buttons"

I isolated the button and its effect movieclip simply by making them again, from scratch, in a new document.. everything works fine, so I've got the tellTarget command and the interaction between the button and its movieclip nailed down. Now, I'm pretty sure that it has something to do with me needing to specify that the effect movieclip (in my real .swf) is inside another movie clip and on a different layer.. My button and movieclip are in the same movieclip but each on a layer of their own, the movieclip has an instance name of "test" and the button has a script like this:

on (rollOver) {
tellTarget ("/test") {
gotoAndPlay ("in")
}} on (rollOut) {
tellTarget ("/test") {
gotoAndPlay ("out")
}}

When I roll the mouse over the button, the output window gives me this:
Target not found: Target="/test" Base="_level0.mc_mm_buttons"