Whatpulse won't start, Unable to install crashRpt!

[Bai.Bing]

System:
Microsoft Windows [Version 10.0.14393]

Client Version:
whatpulse-win-2.8.4.exe

When I first install whatpulse2 on my computer, I'm able to use whatpulse2.
After closing this application, and start it again. I got no response at all.
After digging in this forum, I noticed the app.log located at
%LOCALAPPDATA%\WhatPulse

Then I checked the log detail. every time I start whatpulse2.exe, I get below logs:
24-05-2019 20:54:49.611 INFO "Starting WhatPulse 2.8.4-1633..."
24-05-2019 20:54:49.627 DEBUG Unable to install CrashRpt! Error:
24-05-2019 20:54:49.627 DEBUG Can't destroy not initialized crash handler.

I feel there's something wrong with the installed CrashSender1402.exe.
When I double click to try to open this executable, I get the below pop up windows error:
Windows cannot access the specified device, path, or file. You may not have the appropriate permissions to access the item.

But I don't know what specified device/path/file CrashSender1402.exe is trying to access. If I know, I can manually check if it's accessible or not.

Thanks for your help on this!