Semi good news : New Database.odb contains firebird.fbk

The semi good news is that New Database.odb contains fbk file saved when a table is created and saved from Base
Here is the unziped New Database.odb

The bad news is the firebird.fbk is in fact firebird.fdb file , so the saved file is the database file instead of backup file (i renamed the fbk to fdb and can be open in flamerobin)

When i loaded the New Database.odb i got this backtrace

rogram received signal SIGSEGV, Segmentation fault.
0x00007ffff7b7b99d in rtl_ImplGetFastUTF8UnicodeLen (pStr=0x7ffffffff000 , nLen=18238, ascii=0x7fffffffb658) at /home/mariuz/work/libo/sal/rtl/ustring.cxx:610
610             unsigned char c = (unsigned char)*pStr;
(gdb) 

So i need to work on the save fbk to odb part