The proxyroot.cer is different on different VuGen machine, so you can not use mine.
Some troubleshooting tips here,
1. after you started proxy recording, can you record HTTP request?
2. after start recording, you can open a command line window, run the following command,
netstat /na | findstr xxxx
here xxxx is the port number you specified in start recording dialog. You should see some logs if everything is OK.
3. After start recording, go to task manager, and check whether you can find a process named HP.LR.ProxyRecorder.exe. It should be there.
4. Before you click on start recording, your VuGen machine's IE proxy setting should be as usual (not 127.0.0.1:xxxx).
5. install a firefox in VuGen machine. after start recording, start firefox, set its proxy to 127.0.0.1:xxxx, then try access HTTP ant HTTPS sites and let me know the result.
Thanks.