I have a client that has the Events Calendar installed and they intermittently encounter the following error when they go to create a new event:
"cant add children to node"
They do not even get to enter the event name, Silverstripe just does not create it (but this only happens occasionally).
They are using IE (not sure what version) and I can not replicate the error for myself. Does anyone know what this error means and where I might go to fix it?