Attempts to playback an IBM Rational Robot script result in failure description "This script command contains an invalid mouse action".
The script runs the following line and yields the script command failure.
TreeView Expand,"Type=TreeView;Name=treeBrowser","Text=Own Node"
This line is the first with the TreeView command.
The cuase is unknown.
Resolving the problem
Verify if the following security option is disabled.
User account control: Run all administrators in Admin Approval Mode.
For Windows 7, you must install Robot first without the .NET option. Afterwards you can install .NET support through a hotfix. You can get that hotfix from Rational Client Support.