Check your processing extents and make sure your raster area is covered by it.
Ali,
I created a raster from the xlsx file. When I run the fill tool on it, it runs fine. It also has not cells to fill since there is not local low point that is not on the edge of the raster. I'm running 10.1 and ran the fill tool in both Arc Hydro and Spatial Analyst.
I rarely run the sink tool. I tried to run it and got an error (wouldn't even start to run). Then I realized the the input file is not the DEM but the fdr (flow direction grid). When I used the flow direction grid, it showed a raster range from 0 to 255 with all values "null".
So, unless I created the DEM incorrectly, the sink tool is giving me the same answer I get other wise. The way I identify the sinks is I use the raster calculator to subtract the rawdem from the fil dem. I can then color ramp it with dark blue for the high value (deep) sinks and a lighter blue for the shallower sinks. In your dataset I still find no sinks.
According to the ARCGIS help 64 means flow from down slope to up slope.
64 means the flow is to the north. (See image). The only other number I know of that is not shown on this graphic is 255 which defines the cell as a sink. See also http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=flow_direction
[ATTACH=CONFIG]31183[/ATTACH]
Lattitude Longitude Bedrock -2 48 12.5179 -1 48 12.4755 0 48 12.4015 1 48 12.2358 2 48 12.124 3 48 12.1508 4 48 12.2076 5 48 12.179 6 48 12.2155 7 48 12.244 8 48 12.2862 . . .
NCOLS 29 NROWS 51 XLLCORNER 290 YLLCORNER 510 CELLSIZE 10 NODATA_VALUE 0 12.5179 12.4755 12.4015 12.2358 12.124 12.1508 12.2076 12.179 12.2155 12.244 12.2862 . . .