Error in external axis wizard

I’ve had a bit of a struggle with strange behaviour in the External Axis Wizard. I’m using RS 6.04.7206.1027, 64 bit, and downloaded the wizard today.
I’m compiling a mechanism with the robot mounted on an X-Y pair of linear slides, but on clicking Finish, I get the screen below, and the system does not seem to have been configured.

UPDATE: I’m now running RS 6.05.7502.1049 (currently the newest available), still the same error message box.

Hi,

Are you using the same RobotWare version compared to the Axis Wizard?

/Adnan