What program? i have found a few different instances of this on google and knowing the program might help. Also, what happens when you hit no?
-g
EDIT: what os are you running and is the program pocketworksheet?
EDIT2: if it is pocketworksheet, look
here and search the page for pvbform2.dll. It tells you what to do if it is an older/newer file. Sorry for not telling you exactly what it says, im not THAT nice. Oh and by the way the reason i didnt just tell you to go to google is because you had already searched the site