Server Busy

KSP

I have a problem with sending a complete directory from the controller to my computer.

To realize this I use the FileSystem.GetDirectory(string remoteDirectory, string localDirectory, bool overwrite) function.

 

But when I execute the function a message box pops up with the following warning: "This action cannot be completed because the other program is busy. Choose 'Switch To' to activate the busy program and correct the probem." Below that message are three buttons: "Switch To", "Retry", and "Cancel".  The first two are clickable, but "Cancel" is grayed out.

When I click the 'Switch To' button the start menu pops up but nothing happens and the folder is send correctly to the computer.

 

I'm not sure if the message has something to do with Robot Application Builder but maybe someone here knows where that message is coming from and how to solve it.