Same here. How to troubleshoot that?
I've configured "Update" -> "Mirror" to "Folder to store mirrorerd files" to "C:\ESET" and I do see > 500 *.nup files and update.ver in it. Does that Directory have to match the Apache Proxy Cache dir?
Is there a way to provide the initial static group using a msi property? install_config.ini contains P_INITIAL_STATIC_GROUP , but that value is rather cryptic.