Tshark custom columns: Why don't I get an error message?

This issue was migrated from bug 6131 in our old bug tracker.

Original bug information:

Reporter: Joke Snelders
Status: RESOLVED FIXED
Product: Wireshark
Component: TShark
OS: Windows XP
Platform: x86
Version: 1.4.0

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information