MF: since a few days teamviewer is officially supported by desy and one can get a "supporter" license and an account by contacting uco. Everything is explained here, sadly in german.
bomgar is no longer supported. The people who used bomgar have to use teamviewer now.
Related information about the intended behaviour can be found here
Stopping macros Some macros may take a long time to execute. To stop a macro in the middle of its execution type Control+c. If the stopping process last too long, you may trigger the aborting process with a second Control+c. Here be patient, further issuing of Control+c may leave your macro in an uncontrolled way. Use them only if you are sure that the aborting process will not bring your system to a safe state.
Alba is willing to put some effort to understand the issue and find a solution. Not easy to reproduce the error. Please report to Teresa, if you have information that would help Alba.