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Unable to download simple PLC


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I am trying to download a simple PLC (attached) into a Geo Brick LV. The code before the OPEN seems to do what is expected, but once the OPEN has been issued, the following lines give an error:


**PMAC Error 5, Command not allowed unless buffer is open


I am downloading through PEWIN32Pro2 v4.4.0.0, and have stopped all PLCs.


Any help on this would be appreciated.


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