cisTEM crash

Hi,

I started an Ab-initio 3D construction and the cisTEM GUI crashed. On restarting it and loading any of my project files it did not start and said:

SQL Error: disk I/O error
Trying to execute the following command :-

BEGIN IMMEDIATE;
From core/database.cpp:33
int Database::ExecuteSQL(const char *)
Aborted (core dumped)

Everytime I am trying to load my files in cisTEM, it is saying the same.

what should I do?

Thanks,

Richa