Can not install version 3.4. Build 343 properly - text is lost

Hi, unfortunately I have problems to install version 3.4. Build 343 properly. During the process the following error message appears http://screencast.com/t/uueNGOUn
Afterwards no text is showing up in the menues of the program. Please have a look at this screenshot http://screencast.com/t/TbuiwNcG6y6 . I'm on Windows 7 and I have got no error like this in the previous build. I hope my description is helpful in a way. If not please let me know.
Best,
Iris