If you are getting this Error then it means the Game can not load the
OpenGL Subsystem correctly, which is used for the Graphics.

Video Tutorial: https://youtu.be/w2AB5CLdOoU
Fix scaling video screen partically visible: https://youtu.be/yVqFHG-rbho
Widescreen Video: https://youtu.be/WwoE_lL8KGo

If you changed the Game settings
1. Go to the Game installation directory and open the folder /base/,
find the last modified *.cfg file, which is usually named after the Windows Loginname

2. Move or rename this file and try with different Video Settings again

If it doesn't work on first run
1. Go to the Game installation directory and open the folder /base/,
find the last modified *.cfg file, which is usually named after the Windows Loginname

2. Open it with a Texteditor like Notepad, make sure the game is closed

3. Search for the entry that reads something like: seta r_mode "8"
change it to
seta r_mode "-1"

4. At the very bottom of this file add the following two lines,
the numbers shown here are for FullHD, change it to your
real Monitor Resolution (look it up in Windows or the Manual).
seta r_customheight "1080"
seta r_customwidth "1920"

5. Save the cfg file and then start the game.

6. In game playing on a level adjust the Field of View by entering into the
console (You might need try different values to make it look good for you):
seta userfov 94

This is how you can open the console: https://www.gog.com/forum/star_trek_elite_force_ii/console

If you are using Vista:
1. Go to the Game installation directory,
right click on EF2.exe and choose Properties.

2. Go to Compatibility tab, enable Compatibility mode and set it for Windows XP
disable Desktop Composition
enable running with Administrative privilege level
then try running the game directly from EF2.exe file

Update/Downdate your Graphics drivers.
1. Un-install the old drivers, use un-install Wizard, or any tool which is delivered with your driver.

2. Reboot your pc with default drivers and install the already downloaded new/old driver

If all of this did not help, make sure similar games using OpenGL work.
Then Post here to allow the community to help you.

Thanks first step fixed my issue.

Is this a new bug with the GOG version?

this is easily solved if you run the game in DX12...which is 100% possible...I made a post with a url to a guide explaining howto

No it is a Problem that came up because the game is old and does not have all the options in the menu accessible to select resolutions for modern hardware.

where's this post because so far the advice here isn't working for me