The error report is actually telling you what the problem is and where to find it. Open the file, go to Scene mode, open scene04, in the timeline find efigure01 and check the properties for joint.bone23-X. The controller script in there is incorrect, in that it assigns a value to a variable without first declaring it, which is an illegal operation as you must first declare the variable type (eg. Floating point). Check the Script documentation for variable types. You will notice if you save the controller script without changing it you get a 'parse error' message, which indicates something is wrong with the script's syntax. If you see this message and choose to ignore it Anim8or will still warn you of the issue on opening the file.