Created attachment 54052 [details]
T tried to a Custom installation "only for me" English / German with extra languages "French" and "Spanish" parallel to 3.4.4 and may be 20 Server installations (should not matter). I did a reboot before I started installation and I am sure that there is no quick starter, but Installation stops.
Forgot to mention: I started installation with simple double click on LibO_3.5.0beta0_Win_x86_install_multi.msi
See the same on another WIN7 PC, so NEW
It is impossible to fix this, because LibreOffice 3.4.4 is released and the bug is in LibreOffice 3.4.4 installer. It was fixed for 3.4.5, see bug 36677.
Workaround: First you need to uninstall 3.4.4. It usually works in interactive mode, or you can use uninstaller tools such as Perfect Uninstaller.
*** This bug has been marked as a duplicate of bug 36677 ***
*** Bug 43640 has been marked as a duplicate of this bug. ***