I'm using Pylot 1.26 with Python 2.7 on Windows 7 64bit having installed Numpy 1.6.2 and Matplotlib 1.1.0. The test case executes and produces a report but the response time graph is empty (no data) and the throughput graph is just one straight line.
I've tried the 32 bit and 64 bit installers but the result is the same.