A serious problem with some ArcToolbox  instruments

Discussion created by natalia_nov on Sep 6, 2013
Latest reply on Sep 11, 2013 by natalia_nov
It seems that I have a global problem with some ArcToolbox instruments (ArcGIS10.0).
I tried to use instruments "Add Xy Coordinate" and "Field Calculate".
In both cases they doesn???t work, the program gave zero (0) for all objects in all new fields.

Really, I can???t imagine the reason of it. What shall I try to do with that?