CH341SER_MAC No longer works in macOS Sierra

Hello,
I wanted to update this thread with a solution for Mac OSX High Sierra users, specifically 10.13.4.
If you have problems with the driver using the latest OSX High Sierra please refer to this Apple KB Article:

Basically, the kernel extension needs to be approved to load and is done so in system preferences/security.

My symptoms were not a kernel panic, but I found this thread in my search and the above KB article fixed my issue.