PC has 8.3 filenames Enabled - Still getting TIMEOUT Error

I had a user send me a screen capture of the error message she was getting. I then found the Wiki Article on the Timeout error.

I had her open a command prompt and enter a DIR/X and it showed that she already has the 8.3 filename enabled.

It has been a few months since she got this PC and this was the first time she had tried running the IPLOT Organizer. It seems unlikely that the 8.3 was enabled recently, requiring any special treatment for IPLOT so are there other reasons that this same error message might appear?