Gnuradio 3.8 on Windows generates negative return codes

[Lukas Haase]

Hi,

I just installed Gnuradio 3.8.0.0 (Python 2.7.10) from the website.
The most simple application with gnuradio fails with

>>> Done (return code -1073741795)

and no windows appears. This is how it looks:

https://snipboard.io/o4ZjvA.jpg

When I add a USRP block I run into the same trouble but this time with a 
slighly different negative return value:

Executing: C:\Program Files\GNURadio-3.8\gr-python27\python.exe -u 
X:\Prototype\gnuradio\SaveSignal.py

[INFO] [UHD] Win32; Microsoft Visual C++ version 14.0; Boost_106000; 
UHD_3.14.1.HEAD-0-g0347a6d8
[INFO] [X300] X300 initialization sequence...
[INFO] [X300] Connecting to niusrpriorpc at localhost:5444...
[INFO] [X300] Using LVBITX bitfile C:\Program 
Files\GNURadio-3.8\share\uhd\images\usrp_x310_fpga_HG.lvbitx...
[INFO] [X300] Radio 1x clock: 200 MHz
[INFO] [GPS] No GPSDO found
[INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D00000000000)
[INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1310 MB/s)
[INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1307 MB/s)
[INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD100000000001)
[INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD100000000001)
[INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0000000000000)
[INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0000000000000)

>>> Done (return code -1073740791)




I could not find any useful information about this.


I know Windows is not officially supported and it is marked as "v3.8.0.0/v1.7 
BETA" but I would still be happy if this can be resolved/debugged somehow.

Thanks,
Luke