I tried another thing.
I think it's very easy to program an Add-ins for Windows Home Server.
But, it's NOT easy as to what to create the Add-ins along with the service.
So now, I did a simple add-ins for "notepad" on windows home server console.
(instead of "notepad.exe" by Program Launcher or something like that.)
This provides any client machines under the Home Server to shared text files by use of this add-ins.
Because the files are supposed to be saved in "D:\" on Home Server as default.
If you have more than two machines in the local network, it must be helpful when the machine(s) have trouble.
When you fall into the trouble on more than one of the machines, you might check the one with opening Home Server Console.
Then, you can write down some informations and share them by a text file.
I know this add-ins would probably have some bugs because I really easily created it.
So, I think I will recheck the code in the future...maybe.
Windows Home Server SDK
Install(msi file created by Wix):