After having the standalone client updated this morning, I have been unable to enter any game or project on either Chrome or Firefox. After the launcher starts, it opens a new tab in my default browser to friends.kogama.com/games/ rather than starting the standalone client.
Uninstalling, deleting standalone files, reinstalling, and clearing cache/cookies didn't work. I'm not quite sure what the exact issues are, but I was finally able to find a workaround after confirming two things:
1. The path name shouldn't have a space in the username. For example, C:\Users\USERNAME\AppData\Local\KogamaLauncher-Friends works, but C:\Users\USER NAME\AppData\Local\KogamaLauncher-Friends doesn't.
2. The path link (from browser) must target the application with .exe at the end of it. If it doesn't, it will not open the launcher.
I confirmed these two things by opening a new user account on my computer without a space in it and by typing the specific path into the program to choose to open the link. This method only works for Firefox so far, since I haven't found out how to make it work with Chrome.
On a closing note, as far as I'm aware, I've been the only one experiencing this so far. Therefore, I can't really ask anyone to help verify this... so, I apologize in advance if any of this information is incorrect or my assumptions mistaken. This is just the workaround that I've found so far that works for me.