Messenger issues after RC2 update

When I updated to RC2 I was unable to install this new version of the Messenger. The system kept the old version, even I cannot "uninstall it". When I go to "update apps" it is still there See images below:

when I click on it, it disappear and the "downloaded section show the image below)..

Then when I click install...the newer version above does not show in the apps installed (it shows the older one):

and when I go back to the "update", I find the newer version still sitting there as shown below:

Then I tried to delete the module and install it again, but I got this message:

but will never uninstall it.

Any help on this please?