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"Unknown error" crash on startup related to CONNECTION Client

Product(s): WaterCAD, WaterGEMS, HAMMER, StormCAD, SewerCAD, SewerGEMS, CivilStorm
Version(s): CONNECT Edition
Area: Other


When starting the program, a crash occurs with the following details:

Bentley.Connect.Client.API.ConnectClientAPIException: Unknown error.

at Bentley.Connect.Client.API.V1.ConnectClientAPI.SubscribeToEventNotifications()
at Bentley.Connect.Client.API.V1.ConnectClientAPI.EventRefresh(Object StateObject)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.TimerQueueTimer.CallCallback()
at System.Threading.TimerQueueTimer.Fire()
at System.Threading.TimerQueue.FireNextTimers()


This is a crash we have seen reported before which may be due to a timing issue with the CONNECTION Client that runs alongside the OpenFlows product. It is unclear at this point why this crash can sometimes occur, but we believe that the latest version of the CONNECTION Client may resolve the issue.

So, to work around this issue, either exit out of the CONNECTION Client before starting the OpenFlows product, or upgrade your CONNECTION Client. This can be done within the CONNECTION Client interface, or from the Fulfillment Center (download site). If desired, you can also adjust your CONNECTION Client settings such that the program does not start when you sign in to Windows.