Dvb-s2 example

Hi,

I would like to build a dvb-s2 transmitter.
I get this error on my BBheader

[22:30:46.187000] SoapySDR: SoapyLMS7::setAntenna(Tx, 0, BAND1)
[22:30:51.259000] Pothos.Block.work: BBheader0: Exception: Buffer too small for min_noutput_items
[22:30:51.259000] Pothos.Block.work: BBheader0: Exception: Buffer too small for min_noutput_items
[22:30:51.259000] : gr::buffer::allocate_buffer: failed to allocate buffer of size
[22:30:51.259000] : 64 KB
[22:30:51.273554] PothosGui.TopologyEval.commit ⇒
Framework Topology Connect Error: Pothos::Topology::commit(): Framework Topology Connect Error: Interleaver0.activate(): Exception: bad allocation

[22:30:51.365000] Pothos.Block.work: BBheader0: Exception: Buffer too small for min_noutput_items
[22:30:51.366000] Pothos.Block.work: BBheader0: Exception: Buffer too small for min_noutput_items
[22:30:52.071000] SoapySDR: Make connection: ‘USB 3.0 (LimeSDR-USB) [USB] 9060B00473320’

i’m using a ts file I downloaded: bbb24p.ts

can anyone help?
thanks