Tablor.sty

Hi
I trying to insert a table of variations  for a function by using the tablor.sty , I'm using Texmaker on win 7
64 bit (if it helps) , I've downloaded the xcas program and enabled the shell -escape option , but still it
isn't working and got the error message:
Package pdftex.def Error: File `naztablor2_Tab.0' not found.

Thanks .
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