It sounds like you are using the add-on from Juiced Technologies called Exact Forms Plus.
Typically the button you click to create the file will have a line that looks like this.
& "&fn=AppName"
what you can do is to make a formula field for the file name. Let call it [EF+ File Name]
That field would look like
"some std words" & "." & SearchAndReplace(
[contact - lastname],"'","")
The crazy stuff in that search and report is to look for characters in he last name which will mess up the button. ie eventually you will have a client called Paddy O'Connor and that single quote will make the button fail. So that SearchAndReplace is to look for single quote and turn them to a null.
So then you would change the line in your code to
& "&fn=" & URLEncode([EF+ File Name])
------------------------------
Mark Shnier (YQC)
Quick Base Solution Provider
Your Quick Base Coach
http://QuickBaseCoach.commark.shnier@gmail.com
------------------------------
