Update doesn't work.

i guys, I am running Catch Base Pro on rt-erfurt.net. I want to update from 3.01 to 3.7 but all the time, it shows this error (pic 1) Now, if I try to do it manually, another error appears (pic 2) http://postimg.org/gallery/gf4jarlu/ How can I install this update? Please help! Thanks community! Josef