I'm getting a error code 1619
---ERROR_INSTALL_PACKAGE_OPEN_FAILED ---This installation package could not be opened. Verify that the package exists and is accessible, or contact the application vendor to verify that this is a valid Windows Installer package.

When i use this switches
Msiexec /I firefox-29.0.1-da /quiet /norestart /qn

Msiexec /I jre-7u60-windows-586 /quiet /norestart /qn

Msiexec /I NAESKOM_client_x86 /quiet /norestart /qn

According to the msiexec.exe this apps should work with normal/stanard switches.

This one works fine

Msiexec /I SkypeSetup.msi /quiet /norestart /qn

All apps are located in the same deploymentshare

I suddenly realizied that i forgot to write Msiexec /I firefox-29.0.1-da.MSI /quiet /norestart /qn :S
That seems to take care of the problem.
It just took me 3 days to spot it. :S :S