Emulator settings change at random

[MIMadMan]

Just 2 days ago I finished setting up launch box for the second time. The first time (new to LB, followed multiple guides and read the wiki) everything was a success until it wasn't. I had systems that would work and others nothing worked. I believe the problems were a mix of my own and LB. I uninstalled LB and did some more research. I unzipped a lot of my roms because LB wasn't finding them. The second time I imported each system one at a time. I double checked all the settings twice beforehand to make sure everything was good. I successfully uploaded my last set of roms early Monday morning and everything was tested and working. Today I try to play and I have one problem after another 8 out of the 19 systems I have displayed this message when I clicked play "the emulator specified for the game no longer exists. Please edit the game and choose an existing emulator" all 8 of these systems are running through retroarch, the cores are downloaded and updated in retroarch as well. I go into the game settings and there is no emulator showing. I changed it on one game and tried but nothing. I mass edit the whole system and nothing. The only fix I have found is deleting the entire system and all of its data. I can't explain what is making LB lose the emulator info but I think I know why just editing games and putting the emulator info back in isn't working. When you import a ROM when you get to the emulator page I choose retroarch it then asks me to choose my core for my ROM I choose gambatte. After following all the prompts and successfully importing the ROM it works and boots fine with no issue. 

Am I missing something here? Is this a bug? If you edit 1 ROM or all of them for that system and change the emulator why aren't you asked what core you want to use? It seems that launchbox tries to play them but it doesn't know what core to pick because in edit that field isn't specified. 

I know it's a lot to read but nothing has changed in the last 48 hours and it's just a pain in the butt to have to go back and do all of this work again.

[Tsik]

Hello there and welcome to the forums, to check each emulator's path go to Tools>Manage>Emulators choose the emulator you want and track down the path to the executable and that the Assosiated Platforms are registered correctly as well. If you are referring specific to RetroArch please also check in the Assosiated Platforms tab for the specific cores you are using for each platform/system that are downloaded and selected.

If you experience any problems after that, posting screenshots of the above windows will get you further... 🙂

Edited Wednesday at 11:23 AM by Tsik