You experts out there have not been helpful in the past to identify the problem. Here I go again: error message: Arduino: 1.8.1 (Windows 8.1), Board: "Arduino Pro or Pro Mini, ATmega328 (5V, 16 MHz)"
Sketch uses 4976 bytes (16%) of program storage space. Maximum is 30720 bytes. Global variables use 218 bytes (10%) of dynamic memory, leaving 1830 bytes for local variables. Maximum is 2048 bytes. avrdude: ser_open(): can't open device "\.\COM8": The system cannot find the file specified.
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.
On my PC in manager hardware list I do not see the port message as I did for the past year or more. I have my Arduino Pro Mini wirewd to a Arduino Uno as I have seen demonstrated by other people. I cannot upload sketch as other people seem to do effortlessly. The problem I believe is on my PC. Whay in the hell it does not show the port when I have my Arduino Uno cable connected. ????????????? Any Ideas would be really appreciated or I am going to abandon Arduino platform as it is too problematic.