Twido communication problem

Hy guys,

I have a problem :

For a month now i programmed a plc Twido TWDLCAA16DRF from my pc running TwidoSoft...there was no problem until yesterday when it doesn't commmunicate anymore...and i cannot understand why..
I want to mention that i double checked the modbus driver and reinstalled it an so on...
The strange thing is that the plc communicates succesfully with Citect on the same port and with the same settings..

Can you make some light in this scenario ?

Thanks

I resolved the situation by running a windows restore...i don't know what happened...i gues some driver was broked...thanks anyway