'Designer Needs to be Manually Restarted' After short Timeout

[Bryan_Mason]

Here's an answer to the same question:

[IGN-407]Brief Network/VPN Outages causing designer projects to become invalidated?

This is basically a bug (I’ve added this thread to our internal tracker). As a bandaid, apparently setting sessiontimeout.designer to something higher than the default 60 (via ignition.conf parameter in the wrapper.java.additional area) might help.