[pstricks] compilation problems

[jmpapy]

Dear pstricks users,

I'm using the latest stable pstricks-add version (2.11) available from 
CTAN. I think that the .pro, .tex and .sty files are properly installed. 
I have now some problems to compile a document that I could properly 
compile some weeks ago using an earlier version of pstricks-add.
In the beginning I believed that it was due to the package etex (which 
is needed to use easybmat). But after the elimination of these packages, 
the error remain.
Here is the error message:

! keyval: ticklines undefined.
\KV at err #1->\errmessage {keyval: #1}
                                    
l.19 \readdata
              {\data}{mydata.dat}


I attached an example and the log file.

Could anybody give me a clue ?

thanks

JM
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