GQRX suddenly stops!!!!!!

[ik8ozv]

Hello all,
I am using GQRX with a Funcube Dongle Pro Plus.
I am noticing a strange behaviour from GQRX that I cannot understand if it depends by the program or the Funcube has problems.
When I start GQRX after a couple of seconds the program suddenly stops and in the spectrum I just see lines
Please any help to solve?
Thanks

73’s de Enzo IK8OZV

[mhassell]

Vertical lines that look like a smear of the last signal? That usually means the device disconnected: