Office 2010 does not open when trying to create a new blog post in SharePoint Server 2010

Hello Community,

today I noticed a strange behavior of my office client (in this case, the word application).

When I try to launch the default blog programm to post in a SharePoint 2010 teamblog, the word application won`t start and the following error message appears:

Did anybody already face this issue ?

Would be very glad, if someone could give me a tip.

Thanks in advance for your support.

- Gabriel