llGetMass() not working in script in child prim after rez until script is recompiled. Create physical object with 2 prims Create Script in physical object. Insert in child prim touch_start(integer total_number) { llOwnerSay((string)llGetMass()); } Compile, then touch object. Script will say mass of object. (e.g. [15:58] Object: 3.450869) Take object into inventory. Rez. Touch object Script says – [15:59] Object: 0.010000 Recompile Script. Script will return proper mass. (Rinse then repeat). This is easily duplicated (in Havok4). Take same object into Havok1 Sim , Script will give proper mass when object is rezzed. THIS SEEMS TO ONLY WORK WHEN THE SCRIPT IS IN A CHILD PRIM. NOT THE ROOT OR SINGLE PRIM.