So I have tried for several hours to get this game to work. I posted the client log here im like 99% sure its an issue with the rendering engine not playing nice and its referencing a NULL gui elements (3d5e009) due to the recent update doing something to improve texture batching (dont quote me on this im just spitballing lol). any assistance on getting it running would be greatly appreciated! client.log

also I cannot verify on the discord bc of this im coinoperatedboy if you need to reach out with a fix

ClassiCube crashed.

Reason: Unhandled ACCESS_VIOLATION

I have reviewed a lot of different information and am ready to give a conclusion. You may have folder protector enabled, which is why the classic game cannot start working (access the root folder of the game). Try disabling folder protection in Windows security center, or create a game folder yourself so that it can run. There is another solution, to run a virtual machine, and in most cases it is more effective if the first method does not help

so I run windows LoT enterprise LSTC evaluation software and there is no trusted installer on this device as long as it is ran from my user the read write error cannot be the issue. I have tried moving it folders from both my external drive that I have it normally installed on to the c drive. I have even tried running the regular install off of the website and it works fine like i can open the server brower, open up a single player world, but the moment I upgrade it to the most recent dev build it breaks.

2 hours ago, Dirfiend1324 said:

so I run windows LoT enterprise LSTC evaluation software and there is no trusted installer on this device as long as it is ran from my user the read write error cannot be the issue. I have tried moving it folders from both my external drive that I have it normally installed on to the c drive. I have even tried running the regular install off of the website and it works fine like i can open the server brower, open up a single player world, but the moment I upgrade it to the most recent dev build it breaks.

Well then I don't know, Contact the admins or more knowledgeable people