Recently I had problems making it work on my new Windows XP machine at work. According to the official adobe docs all I had to do was put this file in C:\Documents and Settings\Username and put whatever configurations I wanted there. But no matter what I put in, it never seemed to generate the log file.

After a little more research I discovered that the correct path for Windows XP seems to be %HOMEDRIVE%%HOMEPATH% which by default is the Documents and Settings path. But that is only your sys admin decides something different. For me the path was Z:\ , a mapped shared folder on the network. Once I copied the mm.cfg file there everything started working and the if flashlog.txt file was created at the proper location : C:\Documents and Settings\Username\Application Data\Macromedia\Flash Player\Logs . I also found this technote from Adobe which also states that the location might differ on Windows XP.

If you want to find what your homepath is just open up a windows commander console and type echo %HOMEDRIVE%%HOMEPATH% .