Add the following text to the adskflex.opt file:
REPORTLOG +"C:\Program Files\Autodesk Network License Manager\report.rl"
Move the report.rl to that same folder.
Reread lic file in LMTools
Point SAMReport to that file by pressing the browse button in the SAMReport console .
Now for the output file in the SAMReport console :
You can type any location but you must end with a filename. ex: c:\test\ReportResults
Here are my references:
http://ketiv.com/support/tech-tips/samreport-lite-installation-and-setup-instructions
http://forums.autodesk.com/t5/Installation-Licensing/Report-rl-file-not-being-created/m-p/2578193