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Hello,
I am facing the similar situation of ocassionally being unable to open FDTD file using python api in the ubuntu linux server. I run the python code in a seperate python IDE other than built-in python version. When my python code opens FDTD file at first time, it normally opens the file, however, when python code open FDTD files sequentially, Opening error usually occurs.
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python code in cmdÂ
>>> from importlib.machinery import SourceFileLoader
>>> api_path = "/opt/lumerical/v231/api/python/lumapi.py"
>>>Â
>>> lumapi = SourceFileLoader("lumapi", api_path).load_module()
>>> fdtd = lumapi.FDTD(hide =True)
Traceback (most recent call last):
 File "
 File "/opt/lumerical/v231/api/python/lumapi.py", line 1394, in __init__
  super(FDTD, self).__init__('fdtd', filename, key, hide, serverArgs, **kwargs)
 File "/opt/lumerical/v231/api/python/lumapi.py", line 1112, in __init__
  self.handle = open(product, key, hide, serverArgs)
 File "/opt/lumerical/v231/api/python/lumapi.py", line 242, in open
  raise LumApiError(error)
lumapi.LumApiError: 'Exception [
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