Problem with Abaqus Plug-In: Volume Weighted Average Temperature

Hello everyone,

I have a little problem with Abaqus. I performed a heat transfer simulation in transient. I would like to calculate the evolution of the average temperature of my sample over time. For that I used the plug-in "Volume Weighted Average Temperature". (Figure 1)

In a first time I calculated for the current step, no problem it works very well (Figure 2). However, when I use the All steps mode I get this error message: [Errno 2] file not found: " (Figure 3)
I can't understand the problem. Thank you in advance for your answers

Romain.