repository no longer avaible by zypper?

Hello,

I am trying to install software by zypper for my openSUSE 13.2 with command:

albert/Desktop> sudo zypper in OpenSceneGraph
Loading repository data...
Reading installed packages...
Resolving package dependencies...

The following 3 NEW packages are going to be installed:
  libOpenSceneGraph130 libOpenThreads20 OpenSceneGraph

3 new packages to install.
Overall download size: 4.0 MiB. Already cached: 0 B  After the operation, additional 19.4 MiB will be
used.
Continue? [y/n/? shows all options] (y): 
Retrieving package libOpenThreads20-3.4.0-6.2.x86_64                (1/3),  16.3 KiB ( 41.7 KiB unpacked)
Retrieving: libOpenThreads20-3.4.0-6.2.x86_64.rpm ................................................[error]
File './x86_64/libOpenThreads20-3.4.0-6.2.x86_64.rpm' not found on medium 'http://download.opensuse.org/repositories/science/openSUSE_13.2/'

Abort, retry, ignore? [a/r/i/? shows all options] (a): 


As we can see, the file is indeed in the repository, but it somehow cannot be installed… I am just wondering what’s happening? How can we solve the problem?
Thanks a lot

Albert

No, there is:
libOpenThreads20-3.4.0-6.3.x86_64.rpm
You have installed and the Server was updated.
So a Mismatch in the Versions.

Refresh your Repos and install the Package new.