Originally posted by tweetytunes open the script editor ant type getAttr -l time1.ihi hit Enter... if the Result is "0" then the attribute is not locked.. Thanks for your reply. I tried this code in the script editor but it doesn't return anything...does that mean the result is 0? I'm trying to change various things in the scene i.e. trying the collision objects at different distances from the cloth to see if that is an issue, and just messing with the parameters for the nclothShape to see if anything helps. No joy as yet. The collisions seem to fail when the obejcts get really close together.