I have a Cameo project (using Cameo 19.0 SP3) which I must load to TeamworkCloud to share/edit with others. Under Collaborate->Add Project To Server I ultimate receive an error "Project cannot be added to Teamwork Cloud Server"

Other projects I am loading to TWC are fine, so I do not expect I have a server or process problem.

Debugging the situation leaves me perplexed as the only error I have is the java stacktrace:

"

com.nomagic.ci.persistence.PersistenceException: com.nomagic.ci.persistence.PersistenceException : java.lang.NPE

at com.nomagic.magicdraw.esi.project.project.ad.a (ad.java:145)

at com.nomagic.magicdraw.esi.project.project.ad.a (ag.java:145)

at com.nomagic.magicdraw.teamwork2.esi.local2remote.EsiAddWithResolvingModulesHelper\$3.execute(EsiAddWithResolvingModulesHelper.java:371)

"

Any thoughts what to check/change?