Data Cursor returns "Error" in root locus plot

When I plot a simple root locus and put a data cursor on it to see gain and damping ratio, the cursor just returned "Error" in the box. Is there known solution to this?

s=tf('s');
sys=1/(s+1)/(s+5);
rlocus(sys);

MATLAB: Version 7.10.0.499 (EDU) OS: 32bit Windows7 SP1 JAVA: Version 6, Update 15

Thank you very much. Regards,

[Craig]

I was unable to reproduce this. If you type

>> dbstop if all error

then put on the data cursor what line does it stop at? And what does

>> lasterror

return?