I've got a nightly process that is running successfully most of the time, but last week it failed for one of the 5 zips the process makes. The failure makes itself known in RemoveTempFile, as evidenced by the stack trace below:
Object reference not set to an instanceof an object.
at Ionic.Zip.ZipFile.Save(String zipFileName)
Strangely, after a server reset it started working again.
Any ideas as to what might be causing this?
Thanks for your help.