I've been wanting to play this forever and finally got a new computer. Except it won't install.
Upon launching the installer it wants to download .NET, I've already installed .NET 4 so I continue past that part.
Then near the end of installation it will error "There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor.", Then it uninstalls.
If I try again but attempt launching Osu from /Program Files/osu!/ it will give me this error ".NET Framework Intialization Error / Unable to find a version of the runtime to run this application.".
Other apps that use .NET install and function properly.
Running XP Home SP3.
On a side, This computer does not have internet access and .NET was installed via the Installer app downloaded onto a FAT32 formatted flash drive earlier today.
Hope this is enough info to help diagnose my problem. *takes out DS and EBA in the meantime*
edit: I forgot, I've already restarted since installing .NET 4.