When you click the “Run Analysis” button, CIRCLYuses CIRCLY32.exe to perform the numerical analysis.
This error is usually caused by CIRCLY32.exe not having the correct permissions to be executed by CIRCLY.
Check with your System Administrator that CIRCLY32.exe is not being blocked by your Firewall.
Try switching off your Firewall(s). Here are some links showing how to switch off Windows Firewall:
You may also be running a third-party firewall.