Ever seen this error message? You will get this in SalesLogix 7.5.1 when using Code Snippet Action Items (Not C# Snippet Action Item which are now tagged as obsolete even though they are nothing of the sort). The problem comes in if you add a new Code Snippet item and then later remove it. You must first remove all of the Code Steps within the Code Snippet Item, otherwise when you build you will end up with a duplicate code member in the VFS that you can no longer get access to from anywhere to delete.
Hopefully Sage will get this one fixed soon.