I cannot check out instances of a family table from Creo. When I open Windchill embed browser, I cannot check out none of the items if I use "check out object" icon from top of the page. But looking at the "Actions" column, for these items that have "check out: icon, I can check them out. Those items have "In work" state. For those that are in "Creation" state, I have to change the state ti "In work" to make "check out" icon appeared in "Actions" column and them check them out. I totally cannot understand the reasons. Thank you in advance for any help.