Same problem here.
hi guys, what version and service pack are you using? what are the settings in your weld connector? i just checked solid > shell, shell to shell and sheetmetal to sheetmetal and it works. i'm using 2013 sp2.0.
maybe a crazy question, are you on standalone or network? can you confirm you have a sim pro license?
Same problem on 2013 SW Premium EDU SP2.0 (Network Licence)... Any thoughts?