Warning GID0008: Entries for the key '[id]' occur in both '[file1]' and '[file2]'. The entries in '[file2]' will be used.
This warning occurs if a member ID occurs in more than one comments file. In such cases, the ID and its related comments from the second file will be used rather than those in the first file.
This warning can usually be safely ignored as it simply means that a subsequent comments file is overriding the comments for the given ID with an alternate set of comments. This can happen frequently in the base .NET Framework classes. If the second set of comments used are not appropriate, you may need to take steps to rearrange the files, remove the duplicate set of comments, or supply an additional file that further overrides the comments.