(it's still happening, today with an alpha for sweater, i made it all over & all kindsa 'trials' and it finally worked)
thanks you all for the great efforts !

Thanks for the reply. Okay, so I checked both. The old one is ODE and the new one is ubODE. I put stuff on the Kitely market and usually put the LOD # for each of my products. How does this work from now on? I guess I won't list it anymore.Ilan Tochner wrote: ↑Tue Mar 24, 2020 11:14 amHi Kimm,
First, please make sure you follow these instructions when uploading new meshes: viewtopic.php?t=3199
If you're already doing so then the difference may be due to the different physics engines used in the two worlds. Your old world uses the ODE physics engine while the new one you created is currently set to use the ubODE physics engine. Please try changing your new world to use ODE as well and see if that resolves the issue you reported. You can switch physics engine in the Advanced tab of the world's Manage World dialog.