Engine database update error


I’m created Engine database for USB pendrive with Engine 1.5.2 Build 0009. Working good. Add another files and stopped working:

Caution: The operation can’t be completed because the media’s remaining size is not enough or an unknown system error occurred.

(all .egi files NOT read only, drive writeable, chkdsk: no errors found)

1 file added: error display immediately more files added: error display AFTER analizing 30%

This pendrive 64GB, 6577 songs in the database, free space more than 500MB, added files 3-4MB/file (all 250MB) , copyed all this drive (not need another big space).

The database creating more than 6000 songs very slow, more hour. How to recover database or error checking?