Thanks for your reply.
I recreated the package,
deleted Program Files(x86)\Common Files\Adobe\caps
Program Files\Common Files(x86)\Adobe\backup does not exist.
I still get the same error message(s)
It seeems like 32-bit install fails on 64-bit OS (Windows 7 64-bit).
64-bit install succeeded on two different clients now.
Is that a known issue?
Would you generally advise to install 64-bit adobe-application on 64-bit OS?
For lack of 32-bit W7 OS I could not test installation of 32-bit App on 32-bit OS.
AFAIK, beginning with CC2014 only the 64 bit version is installed if a 64 bit version of Windows is detected.
Photoshop / Acrobat 32-bit installation works fine on W7 64-bit.
Just InDesing seems to cause problems ...
Yes, install 64 bit versions on 64 bit OS. But you should be able to install also the 32 bit software version without a problem.