If your data file has orphan blobs in it as reported by the MSC like this:

Problem on the MyTableWithOrphans data table : Some BLOBs are orphans in this data table (5;55)

You may be able to repair those by compacting the address table as discussed in the following Technical Note: Compacting Address Tables.

This is accomplished by installing the component from the Technical Note and running the ATC_Compact method on the table with orphan blobs like so:

ATC_Compact(Table(->[MyTableWithOrphans]))