Since upgrading from V3.5 SP21 P3 to SP22 P3, this previously working scripted call fails: project, current_branch = project.git.branch_copy(current_branch,new_branch_name,checkout=True) Error: _3S.CoDeSys.Core.Objects.InvalidProjectHandleException Standard Error: The project handle 0 is invalid Workaround: When you do branch copy with checkout=False and then checkout the branch in a seperate line everything works. The issue seems to be that Codesys doesn't give back a proper handle when you do branch_copy...