dvblast not activating CAM

[Gefferz]

We're trying to use the QBox USB to read a channel on Telstar 12 15 West, using a cryptoworks cam and card. We tested the box and satellite with Windows, which worked ok. I'm using a dvblast command line: dvblast -a 6 -c sat.cfg -f 11150000 -W -v 18 -s 18386000 -m qpsk (we have some dvb-t tuners in so it's device 6). Sat.cfg is:230.0.0.1:2000/udp 1 0 3801,3810
We get data created, but it still looks encrypted. I looked at the transport stream generated - I get the video and audio data, but none of the video looks like MPEG. -W is necessary or it will not create any data at all

The red light does not change to blue on the QBox (It does in Windows) This suggests that dvblast is not communicating with the CAM, it's just going through without decryption.
Here are some of the messages from dvblast:-
debug: en50221_Poll: slot 0 is active
debug: opening ResourceManager session (1)
debug: opening ApplicationInformation session (2)
debug: opening ConditionalAccess session (3)
info: CAM: Cryptoworks, 01, 4A20, 4A20
debug: CA system IDs supported by the application :
debug: - 0xd04
debug: - 0x4a20
debug: - 0xd05
debug: - 0xd22
debug: - 0xd95
debug: opening DateTime session (4)
debug: DateTimeHandle : interval set to 5
warning: too many errors for stream 230.0.0.1:2000, resetting
debug: closing ConditionalAccess session (3)
debug: closing DateTime session (4)
debug: en50221_Poll: slot 0 is active
debug: opening ResourceManager session (1)
debug: opening ApplicationInformation session (2)
debug: opening ConditionalAccess session (3)
info: CAM: Cryptoworks, 01, 4A20, 4A20
debug: CA system IDs supported by the application :
debug: - 0xd04
debug: - 0x4a20
debug: - 0xd05
debug: - 0xd22
debug: - 0xd95
debug: opening DateTime session (4)
debug: DateTimeHandle : interval set to 5

And some from dmesg
debug: en50221_Poll: slot 0 is active
debug: opening ResourceManager session (1)
debug: opening ApplicationInformation session (2)
debug: opening ConditionalAccess session (3)
info: CAM: Cryptoworks, 01, 4A20, 4A20
debug: CA system IDs supported by the application :
debug: - 0xd04
debug: - 0x4a20
debug: - 0xd05
debug: - 0xd22
debug: - 0xd95
debug: opening DateTime session (4)
debug: DateTimeHandle : interval set to 5
warning: too many errors for stream 230.0.0.1:2000, resetting
debug: closing ConditionalAccess session (3)
debug: closing DateTime session (4)
debug: en50221_Poll: slot 0 is active
debug: opening ResourceManager session (1)
debug: opening ApplicationInformation session (2)
debug: opening ConditionalAccess session (3)
info: CAM: Cryptoworks, 01, 4A20, 4A20
debug: CA system IDs supported by the application :
debug: - 0xd04
debug: - 0x4a20
debug: - 0xd05
debug: - 0xd22
debug: - 0xd95
debug: opening DateTime session (4)
debug: DateTimeHandle : interval set to 5


Is there any way in Linux to make the CAM active and do its job?

kind regards

Geoff