Issue when using multiple alicats

[picarro-jmoreno]

Hello,

I am trying to use the latests version (0.7.0) but when I try using my breakout box with multiple alicats.
Example:
self.mfcs = { "A": FlowController(address=com_port, unit='A'), "B": FlowController(address=com_port, unit='B'), "C": FlowController(address=com_port,unit='C'), }

I get an error : could not open port 'COM3': PermissionError(13, 'Access is denied.', None, 5)

When I go back to version 0.4.0 it works just fine, after making the proper adjustments for the arguments.

If I do it with just one MFC it works, any ideas on what I might be doing wrong?