It doesn't look like this tool has been kept up to date since May of 2024, does this tool work for the August release? I'd like to verify before purchasing. 

The current version should be working on everything starting from GM2022/LTS and to the latest 2024.11.

Beta versions of GM are at your own risk - these tend to break (and then unbreak) random GML functions and it’s not always possible to make a workaround even if you figure out what did happen this time around.

For the most part I only have to update GMLive when there are breaking changes to project format or GML functions - for example, I’ll have to release a patch for whatever that’s going on for some people here soon.