1.5f - Freezing / Crash on some channels with enabled DDOSD

[Dreamer]

DD 1.5f, Skystar HD2, Win Vista SP2, clean install.

With original BDA device and with Scanman 1.0.8 device.

Few working HD channels:
28.2°E 12607,V,27500 8PSK FEC 3/4 Channel 4 HD (BSkyB)
28.2°E 11223,V,27500 QPSK FEC 2/3 NHK World HD (BSkyB)

Problem channels:
23.5°E 11973,V,27500 QPSK CT HD (CS Link) (scrambled)
19.2°E 10773,H,22000 8PSK ANIXE HD (BetaDigital)

Problem channels are freezing (with no picture) or causing a crash - ALWAYS in 1.5f, clean install, same codecs, renderers, they are working good in 1.5e - always.

OK, so it looks it happens on channels with auto FEC only!?

EDIT:

I tried to change the FEC from auto to appropriate value, didn't help, I found out that the TP of that channel is not in the transponder list, so I did a quick scan, channel has been updated, then I tried to switch to this channel again, it was working for the first time (picture), but it was freezing and it has crashed later. Now there is no picture, same as before, strange.

Problem signature:
Problem Event Name: APPCRASH
Application Name: dvbdream.exe
Application Version: 1.5.6.0
Application Timestamp: 2a425e19
Fault Module Name: AVCDX.ax
Fault Module Version: 0.0.0.4
Fault Module Timestamp: 43c6e4ed
Exception Code: c0000005
Exception Offset: 000051cb
OS Version: 6.0.6002.2.2.0.768.3
Locale ID: 1051
Additional Information 1: fd00
Additional Information 2: ea6f5fe8924aaa756324d57f87834160
Additional Information 3: fd00
Additional Information 4: ea6f5fe8924aaa756324d57f87834160


Problem signature:
Problem Event Name: APPCRASH
Application Name: dvbdream.exe
Application Version: 1.5.6.0
Application Timestamp: 2a425e19
Fault Module Name: AVCDX.ax
Fault Module Version: 0.0.0.4
Fault Module Timestamp: 43c6e4ed
Exception Code: c0000005
Exception Offset: 000052a3
OS Version: 6.0.6002.2.2.0.768.3
Locale ID: 1051
Additional Information 1: fd00
Additional Information 2: ea6f5fe8924aaa756324d57f87834160
Additional Information 3: fd00
Additional Information 4: ea6f5fe8924aaa756324d57f87834160

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[Dreamer]

The problem is back, now even on SD channel:

23.5°E 11875,H,27500 FEC 3/4 Prima COOL (CS Link) 4:2:0 (scrambled)

It happened after recording, few hours first time.

Problem is gone after disabling DDOSD module and sometimes it OK even if DDOSD is enabled.