I installed a fresh AMI for EC2 (http://aws.amazon.com/amis/Microsoft/5147732567196848) and have installed Web deploy 2.1 on it.
The web deploy 2.1 service is runnin
I get the same error when i tried to deploy a website.
In the EventViewer (Windows Logs/System) i had an error log, that the log file of the Web Management Service could not be created ("Unable to create log file D:\Logfiles\WMSVC\W3SVC1\u_ex131126.log. Make sure that the logging directory is correct and this computer has write access to that directory.".
I just removed the readonly flag of the log folder and all worked fine again.