I was having trouble running Neverwinter Nights on my computer. The problem was that I had an AMD graphics card and the game just likes to give those trouble. The fix for it was pretty simple in that I just had to rename the executable file for the game to anything else besides the default. Sadly GOG galaxy no longer recognizes the game as being installed. Is there any way to link GOG Galaxy to the renamed executable? It wouldn't be that big of a problem if it wasn't for the fact that I also don't seem to have access to the manual either since it thinks the game isn't installed. I suppose I could probably download a non-working version to a different location but that's more of a work around than an actual fix and also wastes disk space. Sorry if this question has already been answered and if it hasn't then I would love if someone could point me in the right direction here.

You could try to import the game to GOG Galaxy manually.

== IMPORT ALREADY INSTALLED GAMES TO GALAXY ==

1. For GOG games installed using installers from the last few months (so called Galaxy-compatible installers)
Click the "+" button on top of the sidebar and select "scan and import folders" - it will find all compatible games within that folder and add them to the Client.

2. For remaining GOG game INSTALLATIONS
Find the game in the Library (click on the image of the game), then click the More button and select "Manage" -> "Import folder" and point the folder selector into the folder where that game is installed.
Please be aware that Client will accept any folder pointed to and will overwrite files inside it (this can for example wipe some mods or damage other apps in case of pointing to a wrong folder) and will update the game to the newest version (current default language English).

Source: http://www.gog.com/forum/general/gog_galaxy_beta_2/post1

You can download that through your browser via https://www.gog.com/account

Thanks VanishedOne. I can use that for a workaround to get the manual. Also, Ritualisto, will importing change the name of the executable back to the original name? If it does then that will effectively break the game again. I had to change the executable file name and add in some edited ini files to get the graphics to fully work. If the import won't effect these than let me know.

https://www.gog.com/forum/general/adding_external_games_to_galaxy
Hopefully this will help.

Hmmm... just renaming it made it work...

Could it be that your AMD graphics card is running some sort of program that has a set of 'profiles' built-in to it for games?

For example, NVIDIA graphics cards insatall an NVIDIA Control Panel (that you can open by just right-clicking anyplace on the desktop). (Ref. attached screenshot)

YOu can see on the screenshot that, for example, the game Death to Speis is listed on the droplist. Note that the name if it's executable is also listed there. The 2nd screenshot shows the droplist dropped-down - where you can see a crapload of games listed (each with the name of its executable alongside it).

These are "profiles", and if you rename the executable - the "profile" loses track of it, and thus does not "apply" the profile settings to the game.

Perhaps the profile settings are what is keeping the game from running. An thus, perhaps if you just turned off the profile for that game (or turned off or tweaked some of the individual settings), the game would then run, without renaming it.

Maybe it's just easier to rename it and carry on. But in case this might be the cause; I thought I'd at least point it out to you..

HTH

Sorry, I don't know. I never tried this during the time I used Galaxy. (I don't use Galaxy anymore because there are no benefits for me.) You could backup the changed files before importing the game. So if something unwanted happen you could undo it.

I know its late, but this can help others.

In the installation folder there is gonna be a file named "goggame-xxxxxxxxxx.info" where the x's are a particular string of numbers. open that file with the notepad and in there you will see a "path" attribute with the name of the exe, just name that exe as you named it in the folder to fix it.