Is this message you are getting when you are trying to move the packages (as per the screenshot) between the branches?
If using proxy then please make sure that we have written the proxy information correctly in the ePO server.
I have check the proxy setting on server configuration is already correct. I guess the proxy is not problem. I'm concer about the master repository pull task that sudenly was blank just like no package available to download, but if I look on software --> master repository, all package are there, again if you do Pull Now it will error "site status not found, repository may be empty"
I am seeing the same thing.
For a while now I have been using McAfeeFTP instead of McAfeeHTTP since FTP includes the packages. You simply choose the FTP option from the drop-down menu within the "Pull Now" Server Task and you should be able to see all packages.