Erik, I do not know what will happen when TMG attempts to exceed the 2GB file size limit. I suspect the database file will become corrupted, and TMG will not be able to process that table. The _n.cdx file is the name index. TMG probably won't operate on any project that has a corrupted index file, but having a corrupted name index file seems particularly bad. If you are getting anywhere close to the limit, you should be very, very careful. I do not know if the limit is at exactly 2GB (2,147,483,648 bytes), but if it is, you have about 30MB left and then you will exceed the limit. You should probably consider splitting your project into a separate project. Note that you cannot avoid the problem by using _multiple datasets in the same project_. In a TMG project with multiple datasets, all the datasets share the same set of database files. You need to use completely separate projects. Each TMG project has its own set of database files. John