1334 is not found in the verbose installation log content.
The log reports the following:
MSI (s) (A4:38) [12:05:35:273]: Product: Adobe_AcrobatReader_v11.0.5 -- Configuration failed.
MSI (s) (A4:38) [12:05:35:273]: Windows Installer reconfigured the product. Product Name: Adobe_AcrobatReader_v11.0.5. Product Version: 11.0.11. Product Language: 1033. Manufacturer: Adobe Systems Incorporated. Reconfiguration success or error status: 1638.
MSI (s) (A4:38) [12:05:35:288]: MainEngineThread is returning 1638
MSI (s) (A4:10) [12:05:35:288]: No System Restore sequence number for this installation.
Another version of this product is already installed. Installation of this version cannot continue. To configure or remove the existing version of this product, use Add/Remove Programs on the Control Panel.
{AC76BA86-7AD7-1033-7B44-AB0000000001}
The previous version needs to be uninstalled and a new AIP installed.
Excerpt from the ETK AIP Troubleshooting:
Administrative Installation Points — Enterprise Administration Guide
Why do I see a “another version is already installed” error?
Verify no previous product has been installed. If it has uninstall it. If you’ve already uninstalled, try Microsoft’s or Adobe’s cleaner tool.
This error can also appear if you are patching an AIP in an unsupported order.
Some related information might be found here: http://forums.adobe.com/message/4329735#4329735.