Getting this error while installing zennoposter ?

[robin69]

How to solve this error?

 

[VladZen]

Looks like you didn't uninstall previous version properly.
Try restarting computer and re-installing the program again.

 

[lokiys]

@VladZen The problem is that the zennoposter latest version does not uninstall the program correctly. I can not answer exactly which version, but one of the latest.
It's related to my problem https://zennolab.com/discussion/threads/bugs-in-version-7-2-0-0.84043/#post-565144
I have fixed with going manually to program files and deleting the Zenno installation folder by hand.