C-Beats

Neither of those are error logs, they are information logs. Error logs have the red icon and say error.

You can always press F5 to refresh the grid image and see if that corrects. Given that the art isn't showing in the 3D box either though leads me to wonder if your image group priorities haven't been altered to not show EGS Posters. If you go to Tools > Options and look for Box Front Priorities, in that list is Epic Games Poster checked? If not that would explain why it's not being used for that purpose.

If you have two games with the same name in the same platform the game ID in GUID format is added to the end of the image so we know which image goes to which game. If the names didn't match previously the files aren't then renamed so it could be catching up and noticing that now the images need it and so it gets appended.

There should be two error logs in the Event Viewer. The one you posted and then one above it that's listed as a .NET Runtime error. We'd need that one, the one you posted just tells us that's the application that crashed, not why it crashed.

You can't view categories in platform view. If you want your category at the root and not under anything just set the parent to "Root" and it'll appear there. You can make almost anything you can think of in this view. One thing to remember though is Big Box only shows games at the bottom most levels of your tree. You can't hit a button to view all games in a category for example, you have to select enter and then pick from one of the platforms/playlists that children of it. If you post up an example of what you want your tree to look like we can maybe help better. Doesn't need to be an image something like: Consoles > Nintendo > NES > Genres > {List of Genre playlists} (where each '>' means step down a level)

Last I knew Ares N64 core is considered the most accurate N64 emulator atm. That being said I've never used it to really be able to justify that claim myself. I usually just use RetroArch.

Are you pressing favorite in Game Details and then quickly changing games selected? I see the call that stack is pointing to but it look's fairly safe. I do see how it's possible to get that, but from what I briefly saw you'd have to be changing games immediately after pressing the fav button.

Sounds like the font load we do is potentially failing on startup. You can manually go to \\LaunchBox\LBThemes\Default\Fonts and then right click the Gilroy fonts and select "Install for all users" in the context menu that appears to install the font in your system permanently and it should correct what you're seeing.

Can you confirm what you're doing when you get this error?

You need to be in Platform Category view to do what you're doing. You can't add categories to Platform view like you can playlists. That being said like @Retro808 has stated once you're in that view you can arrange things however you want. That view is extremely powerful in how all you can organize your library. You can nest multiple levels as well. Here's a screenshot of some of mine.

What do you mean by "proper"? You can alter the rotation of anything in a FlowControl so I'd assume the answer is yes. That being said CTC is a third party app and not one I use so I'm not sure if you'd be able to from there. You referring to something like we have in the unified themes, or you mean more akin to Hyperspin where each logo is also rotated instead of strait?

If you're referring to the view files in a theme System view is the view that appears when you press back from the Platform view. The view that shows what platforms you have in a wheel is PlatformWheel#FiltersView (where the # is numbered 1-4). And yeah, for any theme not built in CTC you'd need to manually alter the XAML file

Yeah, you can do that, you'd just have to alter the theme view. I'd first check to see if that theme doesn't already have a view that looks like it (or close to it) first and then work from the one that is closest to what you want.

Normal backup process saves your setting file. If you want to back up any changes you made to the theme just copy that theme folder to a new folder and rename it. Save it offsite for backup purposes if you want. If you change folder make sure to point LB to that new theme folder.

Not entirely sure what you mean. You just want game videos to from your library to show in platform view? If you could create a little mockup in paint or GIMP that shows what you're trying for that may be beneficial.

In Big Box System Menu > Options > Video > Show Game Background Videos (or something pretty close to that). Turn it on to show videos playing as the background instead of in the forefront image/video view.

Filing an official support request via the Help & Support > Report a Bug link on the top of the forums is far more productive than just hoping we see a forum post and get something we've not seen reported by anyone else fixed. If the app is crashing then you should have error logs in Windows Event Viewer. When you open it you want to look in the Windows Logs > Application folder for error logs. Typically there will be two back to back. The top one have a source of "Application Error" that basically just says LaunchBox closed, the bottom on should have a source of ".NET Runtime Error" and have an error log that is a bit more useful. See if you can find that and post it up in the bug report and we can take a look into the cause and see if there any work arounds for you while you wait for an official resolution. While you're doing that also do your best to give reproduction steps so we can try to walk through them and recreate the issue. It makes fixing it FAR easier when we know how to replicate (even if we can't actually get it to fail on our machines).

To get that specific you'd have to use list view. When you click headers to sort in the grid you can hold shift while doing so to sort by Column A then B, etc

Star rating sort uses your personal star rating, falling back to community if you haven't set one. As you can see you have personally rated all 6 games in that screenshot as a 5 and so they are sorted as such.

Just select the items you want to move to the new platform (can press CTRL while clicking to add to selection) and then press CTRL+E to bring up the bulk edit. Press next, then select Platform in the top most drop down asking what field you're altering. Then in the text box put the name of the platform you want to move them to. Press next until done and then select "I don't want to make more changes"

Yeah, I'll see what I can do about making it a value that can be changed easily in the ThemeValues file

Feature already exists as a premium feature. You can apply custom tags to your game and then use filter them via the quick filter and auto-pop playlists.

Yeah making something that works on such a low resolution isn't an easy task and one that would take a lot of work for a very niche number of users quite frankly. LaunchBox is entirely portable. My suggestion would be just get your build set up on another computer then once done transfer it over to the arcade machine. Be far easier for ya.

This is intentional. To use MAME and it's ROMs correctly your MAME version should match the version of MAME your rom set was built against. It's not like most emulators where the version doesn't matter and you always want the newest one.