There is no (just old one from previous installation) logfile.
Webserver is IIS
Xp is 32bit. XP Pro, French
Tried to install on my PC, with the same config. I've the same error.
I run setup.exe and in 3 seconds i've got the error.
On my PC setup didn't create the folder "lansweeper".
On closing the error's window, IE start with Lansweeper site