[Discuss-gnuradio] Bug in DPSK-Mod/Error-Rate in v3.6.3&v3.6.4 not in v3.6.2

[Gentz, Reinhard]

Hello Guys. 

I made a very simple flowgraph from stock blocks and after a few seconds(3-5)  
it unexpectedly  stops simulating. 

I have a random source - Throtte - DPSKMod -  DPSKDemod - Errorrate - 
Scope/Filesink

Both the Scope and the Filesink stop receiving data after a few seconds, 
although it should run forever. 
Internally it does not report any error and 'runs' until I close it.

The Bug occurs in v3.6.3 & 3.6.4 but not in v3.6.2 

'Tcollins' from Gnuradiochat confirmed 3.6.3 not working &3.6.2 is working


Here for .grc code: http://pastebin.com/XSzEPztA
Here for pythoncode (generated from .grc): http://pastebin.com/1PJAv2Ad

Installed version try 1:  GNU Radio v3.6.3-124-gf1ae6c5c ; Ubuntu 32 Bit 12.04 
; GNU C++ version 4.6.3; Boost_104601; UHD_003.005.001-29-g3cb515f7
Installed version try 2:  GNU Radio v3.6.4-86-g77743314 ; Ubuntu 32 Bit 12.04;  
GNU C++ version 4.6.3; Boost_104800; UHD_003.005.001-37-g21311276


What I noticed:
With each of the version I get a specific number of Bytes in the filesink 
(repeatable): 
v3.6.3: 532,480 byte
v3.6.4: 515,580 byte

The Cpu-Load is in the beginning at 20% and once it hangs it drops to 1%