Connection Refused. Another remote control client is connected from xxx.xxx.xxx.xxx.

I have a computer that will not let me connect. Based on the login details, the connection is being refused because I have another remote client connected. We occasionally use team viewer as a customer of our vendor to allow our vendor to support us and we use logmein for our customers to have remote access. I had been connecting to the logmein remote fine and tried to use the teamviewer and it gave me a message saying we didn't have an account and the connection would drop out in 5 minutes. It drop out in more like 5 seconds and I have not been able to logmein since. I suspect the teamviewer is blocking it somehow. I do not  have  a remote connection from the IP address in the error message and I confirmed it is my address. I even tried logmein remote of another computer at another customer location so the IP would be different and used that computer to try and remote to the problem machine and still got the same message. I had someone restart the machine. At this point I am locked out of my own remote connection and my customer needs help.