The file <RUN_NUMBER>_status.txt contains nothing

I ran some tests with urlBlast.exe (IE9) and wptdriver.exe (Chrome), and I found the file <RUN_NUMBER>_status.txt generated by them contains nothing.
How can I correct it?

That is working as expected for Chrome (we don’t currently grab the browser status messages). You saw it with IE as well?

Yes, <RUN_NUMBER>_status.txt contains something when I use urlBlast.exe.