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Error: bad quality (3):processing read data(50): unknown reason (00000000)

I am using Lookout 4.0.1b51 and OPC server (Eurotherm). Error occurs every 30 mins!! Restarting lookout helps for a further 30 mins. Viewing the OPC server, I can see the data, no problem. All values are numeric.
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I see this alarm message if the OPC server gets overloaded and can't completely respond (not a full commfail - a partial if you will) but the alarm soon clears. I am not familiar with the Eurotherm, could you post more info on the configuration of the Lookout OPC client object? Also, have you tried connecting a pushbutton to the PollDevice data member to force a poll?
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The client is a single panel with 5 guages and a hypertrend. The HT contains the same 5 inputs. The inputs are all 32 bit registers from the OPC server. It cannot be simplier!! The error can be acknowledged but does not go away till Lookout is rebooted.
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