Mathlink call from python works with cmd.exe but not with IDEs!!

[Matt Gerrans]

Sounds like a bug in mathlink.   Can you provide more details?

Are you using a COM automation interface (did you create it with
win32com.client.Dispatch())?    Normally in such a case, you'd create the
object, call it as many times as you want, then release its reference (use
del to be really thorough) and it should be freed up.