File Used by Another Process (Timer)

[WRCREX]

Hey Everyone -

I have a little snag. I have this code on a timer

 My.Computer.FileSystem.WriteAllText("C:\test\jesterlog.txt", tbLog.Text, True)

. It runs fine the first time, but when the timer ticks the second time I get the error "The process cannot access the file 'C:\test\jesterlog.txt' because it is being used by another process." Is there a simple way to just close the file? This seems very simple but I'm not seeing a clear cut way to just dispose or close the file. Thanks!