How do I 'manually' Uninstall StreamedMP (1 Viewer)

[nip.nyborg]

Hi
I need some help.
I made a clean install of the new 1.2.1, but forgot to uninstall StreamedMP-1.7.1.2953.
Now I can´t install or uninstall StreamedMP-1.7.1.2953, I just get 1628 Failed to complete intallation.
I tryed to reinstall 1.2.0, and restore backup but still same problem. Very Very frustrating.
Pleace help.

 

[ltfearme]

Installation Guide for Skin: Manual Uninstall