Hi,

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I was using MSCOMM the other day and "PortOpen=.F." was giving a type mismatch (I know it shouldn't). I switched to "PortOpen=0" and all was well. VFP8 SP1 W2K SP4
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Interesting. Last time I used MSCOMM I had it wrapped in a VB control and, needless to say, PortOpen=False worked fine..

Regards,
Viv