A rapidly flashing green LED is most likely indicating that the node hasn't initialized properly.
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As soon as panel pro is launched the initialization should occur, hence why you run into trouble before you load the panel.
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As suggested, check baud rate.
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I'm assuming that you have some sort of USB to RS232 adapter that the CMRI system is connected to the computer through (is this the where the CMRI interface LED that you refer to is located).
Check that the adapter is compatible with windows 10 (some older ones aren't). Check that the drivers for that adapter are up to date and correct for windows 10. You may have to go to the adapters manufacturers website to find the drivers.
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Chris Elliott
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