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Setting up a Serial COM port for the first time I get an errormessage

Request for the permission of type
'System.Security.Permissions.SecurityPermission, mscorlib,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
failed.
it fails on the line: SerialPort1.Open()
Mar 20 '08 #1
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