Export File Browser hangs

Love Export File Browser - 1st time using it in Toad 12. Tried loading large full Db export files and Export File Browser hangs after 8% for one and 35% for the other. Loads small files fine. Is there a log to tell me what is going on? Does Export File Browser not work on a Full Database Export?

Thanks, Vivian Mahoney

The first time you open a particular export file, the EFB builds an index to all of the objects in the file. This does take some time for large files. Subsequent openings of the same file should happen very quickly though. When you say it hangs, how long did you give it? I have seen it take 10 minutes on a large export file, but after that open quickly.