Hi, I downloaded Autodesk Revit for my class and after downloading it every time I open it a black box keeps popping up. I tried looking up a solution, but nothing I tried worked. I ran the troubleshooter and it says to check for missing or corrupt files, would that be Revit? Error 87 keeps showing up too. I'm not sure how to fix this problem if anyone can help I'd greatly appreciate it. Thanks.