wallet crashing on ubuntu 14

[t0maten]

Hi everytime i try to open my wallet and it starts to sync transactions. but just after a couple of seconds my wallet crashes.

Program received signal SIGSEGV, Segmentation fault.
0x000000000066536b in fc::exception::to_detail_string (
    this=this@entry=0x36dafd0, ll=..., ll@entry=...)
    at /home/t0maten/bitsharesx/libraries/fc/src/exception.cpp:144
144           ss << variant(my->_code).as_string() <<" " << my->_name << ": " <<my->_what<<"\n";

So what is wrong
and im using the latest version from github.

rebuilt it from new source and checked out 0.4.8 and this time i got another error
Program received signal SIGSEGV, Segmentation fault.
0x000000000066536b in fc::exception::to_detail_string (
    this=this@entry=0x3883000, ll=..., ll@entry=...)
    at /home/t0maten/bitsharesx/libraries/fc/src/exception.cpp:144
144           ss << variant(my->_code).as_string() <<" " << my->_name << ": " <<my->_what<<"\n";