I Thought I ought to post a note in oder to close this issue.
As you found no issues with the log files, this prompted me to dig deeper into my system. This culminated in me carrying out a system file check by running "sfc /scannow" via the Command Prompt. The scan found corrupt files which it was unable to fix. I hadn't expected this as the computer was fairly new and I had only installed a small number of software packages, ASNext, PF3 and WideFS.
To cut a long storey short, I reset the computer to the factory settings, re-installed the software and am now able to run PF3 over the network using WideFS without any issues.
Sorry for having wasted your time with this issue.
Regards Dave