VB 2008 Security Precaution?

I am building this tool for my 2 home computers. Its a client/server program, which is pretty easy to program. However, as with almost all program, you encounter an error now and then. However with this error I am completely clueless to what the problem is. Basically, when I connect from my client to the server, it connects and all. I can send command lines which the server then adds to the log. I have also made a command called /screenshot which basically just takes a screenshot and send it over the connection (so I wont have to run to my 2 computers constantly xD). Anyways, the thing is, that is working fine but This other code I'm making to make it list all the Drives and the first sub-folders inside the drives, disconnects me >_> I can send the screenshot line, that works fine, but when I send the 'listfolders' command, it just disconnects me. When I go back to my other computer it just says disconnected. And it doesn't even execute the given strings. I tested it to make it send a msg box when DCing, that worked fine, but listing those drives and stuff inside a TXT or List box didn't seem to work :<Also. this code works when I make it execute it on startup, but it wont execute it when its sent by my client. So my only guess is that Microsoft has made some sort of security precaution that made you unable to make programs that could have anything to do with the folders, over a TCP connection or something :s Thats my only guess, but perhaps you see whats wrong?

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