Hi,
I'm using Ranorex 3.0 on Windows 7 and have just noticed that when I run a long test (160 steps in the recording), no log file was generated. I had been running the same recording with about 75 steps and a report was generated each time, but when I copied several of the steps and pasted them in the recording ( increasing the # of steps to 160) the report stopped being generated when I played the recording. The "Generate replay reports" box is checked in the current recording settings tab.