Subscribed to as part of the Enterprise CC package
The packages are built using the Creative Cloud Launcher app to a network share ready to installed to the workstations.
All other packages e.g Photoshop, Indesign etc in the CC pack install with no problem to a test machine using the msi's provided and available in this share.
Acrobat Pro X1 builds with no problems in the CCLauncher, 32 bit and 64 bit versions have been built and tried on the standard Windows 7 64bit OS used on site here, in total 5 iterations have been created and tried with no sucess on this and other machines (4 other machines in total)
Both the MSI installation and setup.exe installation routines have been tried from this network share on machines that have been logged onto with Admin rights, the install has been tried on a basic bare configured non domain machine, again logged on with admin rights, the network share also houses the other CC Packages that install correctly
The log files at:
C:\Program Files (x86)\Common Files\Adobe\Installers (64bit O/S) and
C:\Users\%Username%\AppData\Local\Temp\PDApp.log
Have been viewed and dissected using the information here: http://helpx.adobe.com/creative-suite/kb/troubleshoot-install-logs-cs5-cs5.html
There appears to be little in the way of errors showing in these files that would cause in the installation to fail catastrophically.