Attempting to install on a windows XP SP 3 machine, onto a network drive exported from a Mac 10.5.8 system. (Standard, samba/"windows compatible" file sharing). Drive was mounted as a drive letter on windows.
After running the installer, the "Play Spiral Knights.lnk" was started, with a warning about running unknown programs from the internet. Saying yes, it ran.
Downloading control files (normal)
Spiral knights image (normal)
Then an error message about a file being locked by another program.