If an installation to a client system failed, you can find the log at /system/volatile/install_log.
The AI manifest that was used for this client is in /system/volatile/ai.xml. The system configuration profiles that were used for this client are in /system/volatile/profile/*.
You can also check the AI server's webserver log in /var/ai/image-server/logs/*. This log is useful if the client is receiving an unexpected or incorrect AI manifest or system configuration profile, or when the client can not download files after the initial boot phase.