Hooked my new quad-band TH-9800 up to my Linux laptop, today.  Used the cable supplied with the radio.  Was able to download from the radio without a problem.  After setting up all the repeaters, etc. I wanted, tried to upload.  Received an error message that said:
Failed to communicate with the radio.
'Serial' object has no attribute 'setTimeout'

OS: Linux Mint 18.3 Sylvia x86_64 
Kernel: 4.13.0-41-generic
DE: Cinnamon 3.6.7
CPU: Intel Core 2 Duo T5450 (2) @ 1.667GHz
GPU: Intel 965GM 
Memory: 1533MiB / 1984MiB
GTK 2.24.30
PyGTK 2.24.0
Python 2.7.12
CHIRP daily-20160110

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--John E Kemker III