Problem with Epson Stylus Color 850

I received an error message like this :
“UI DLL Message —
Version error dat file. Please install again”

when I tried to print a DOC file. I’ve tried to uninstall the driver for Epson Stylus Color 850 and reinstall it, but still the error message came up. I’ve tried to make a print test, and still I got the same error message. The printer is connected through a network. Is this a virus or just a Windows problem ?