I think I have tracked down the problem. The
older ROM version (pre Beta 2.22 - my unit is 2.03) responded to the 'switch
status' command with a 'not supported' response. The new units now
respond with the status of the card in switch. This command was used to
detect the difference between the 171 and 152 model card readers.
Therefore the software thinks it has a model 171 card reader but when it tries
to lock the card in the reader it fails therefore the software does not think a
card is inserted in the reader. The pollbook does not bother to check the
return value from the LockCard function (with is incorrect) and so works with
the card reader.
I will try to get this fixed today.
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