I suggest you head to the Discord chat (blueish/purple button on the right sidebar) and ask for help in the help-and-technical channel. Will be much more convenient for troubleshooting.

Hi, after hearing about ladder reset on /r/slashdiablo I decided to install Diablo 2 for the nostalgic feeling. I'm currently stuck on step 3 on this guide - https://www.reddit.com/r/slashdiablo/comments/426llc/step_by_step_how_to_install_slashdiablo_guide/ Whenever I try to launch Diablo 2, I get this "Error" with big red x and no message. I'm clueless to know what I've done wrong. Can anyone please help me? thank you.

Also, happy farming!

Help - installing problem