Basically, PD stands for Parallels Desktop and VM stands for Virtual Machine.
In more details, you need to Open registry editor in Windows (you can simply go to Start in left down corner of the screen, clisk on "run", type "regedit" and hit enter to reach it) and remove HKCU\SOFTWARE\Classes\CLSID\{ B54F3741-5B07-11CF-A4B0-00AA004A55E8}
Then you need to open Command Prompt (you can simply go to Start in left down corner of the screen, clisk on "run", type "cmd" and hit enter to reach it)
And then type command below:
regsvr32 vbscript.dll
Hit enter. Stop Windows gracefully, stop Parallels Desktop and start Virtual Machine again.