Reclassify tool in Spatial Analyst

Hi

I have been encountering an error of -214783648 to + 214783648 frequently while trying to use Reclassify tool in the tool bar while using the raster grid. The first time while reclassifying it works, if for some reason if you want to do again this tool is giving up and ending up with the numbers above. Can anybody help?

Thanks
Vijayashree