Wait for File to Get Written

I've run into this a number of times the last few months and couldn't find anything in the archives that really seemed to address it. It's a common enough issue that I'm sure people have dealt with it, and I'm curious what solutions you might use. Basically I have situations where I need to wait for ColdFusion to finish creating a file before displaying it. The legacy code I'm working with using a cfexecute to run an executable file, and it uses this code snippet: <cfloop condition="NOT FileExists(theFileName)"></cfloop> <cfinclude template="viewFile.cfm"> So basically it loops until it finds the file and then sends it down via a cfcontent tag. I'm not particularly fond of this as if for any reason the executable fails, you end up waiting for a timeout situation. In the past I've used a sleep() to just pause the page but that's not particularly ideal either. Any better options, or maybe a combination of the two? Mary Jo