ICE33 posts warnings for any entries that register Classes, Filename Extensions, ProgIDs, Shell Verbs, Remote Server AppIDs, MIME types, or Typelibs. These entries should be moved to their respective tables if you have a policy where you use install-on-demand and/or advertisement. If you do not then it is not necessary to move these entries. There is a tool to fix ICE33 errors under Tools>Convert COM Entries. In most cases this tool will convert most entries. However, some might not belong to the package so you might need to convert these yourself or remove them.