upgrade komento from 1.7.2 to 1.7.3 gives me some administrator white screens...

After upgrading Komento from 1.7.2 to 1.7.3, some administrator pages of komento do not work anymore...

the dashboard looks ok. However:

on the 'configuration' tab, the layout is wrong and cannot press anything (see attached screenshot)
the 'comments' list gives me a white screen (blanc)
the 'reported comments' give me also a white screen (blanc)
The 'subcribers' give me also a white screen (blanc)

The rest of Komento in the backend is working fine....

I did try to reinstall komento, but that did not make a difference...
also cleared all caching. did not make a differce either

for the rest is the site working on:
joomla 3.2.1
hdwmediashare 1.1.13
easysocial 1.1.4
easyblog (not latest version, but version before current version. Have disabled Easyblog for the time being cause not in use yet)
Komento 1.7.3

On the frontend everything appears to be working fine.