Problems on CentOS 6 64 bit

Hi all, I have compiled and installed rtl-sdr on CentOS 6 following instructions. Everything compiles without errors, but: - when I run rtl_test I get the following errors: Found 1 device(s): 0: ezcap USB 2.0 DVB-T/DAB/FM dongle Using device 0: ezcap USB 2.0 DVB-T/DAB/FM dongle Found Rafael Micro R820T tuner Supported gain values (29): 0.0 0.9 1.4 2.7 3.7 7.7 8.7 12.5 14.4 15.7 16.6 19.7 20.7 22.9 25.4 28.0 29.7 32.8 33.8 36.4 37.2 38.6 40.2 42.1 43.4 43.9 44.5 48.0 49.6 Info: This tool will continuously read from the device, and report if samples get lost. If you observe no further output, everything is fine. Reading samples in async mode... cb transfer status: 5, canceling... cb transfer status: 5, canceling... cb transfer status: 5, canceling... cb transfer status: 5, canceling... cb transfer status: 5, canceling... cb transfer status: 5, canceling... cb transfer status: 5, canceling... cb transfer status: 5, canceling... Library error 0, exiting... If I run rtl_tcp I get the following errors when the client tries to connect: Found 1 device(s). Found Rafael Micro R820T tuner Using ezcap USB 2.0 DVB-T/DAB/FM dongle Tuned to 100000000 Hz. listening... Use the device argument 'rtl_tcp=192.168.33.99:8767' in OsmoSDR (gr-osmosdr) source to receive samples in GRC and control rtl_tcp parameters (frequency, gain, ...). client accepted! set freq 145000000 cb transfer status: 5, canceling... cb transfer status: 5, canceling... rtlsdr_demod_write_reg failed with -4 rtlsdr_demod_read_reg failed with -4 rtlsdr_demod_write_reg failed with -4 rtlsdr_demod_read_reg failed with -4 set sample rate 1024000 rtlsdr_demod_write_reg failed with -4 rtlsdr_demod_read_reg failed with -4 rtlsdr_demod_write_reg failed with -4 rtlsdr_demod_read_reg failed with -4 rtlsdr_demod_write_reg failed with -4 rtlsdr_demod_read_reg failed with -4 rtlsdr_demod_write_reg failed with -4 rtlsdr_demod_read_reg failed with -4 rtlsdr_demod_write_reg failed with -4 rtlsdr_demod_read_reg failed with -4 rtlsdr_demod_write_reg failed with -4 rtlsdr_demod_read_reg failed with -4 rtlsdr_demod_write_reg failed with -4 rtlsdr_demod_read_reg failed with -4 rtlsdr_demod_write_reg failed with -4 rtlsdr_demod_read_reg failed with -4 set freq correction 4 rtlsdr_demod_write_reg failed with -4 rtlsdr_demod_read_reg failed with -4 rtlsdr_demod_write_reg failed with -4 rtlsdr_demod_read_reg failed with -4 worker cond timeout Signal caught, exiting! comm recv bye Signal caught, exiting! all threads dead.. listening... The same client connects without errors to another rtl_tcp instance on a Windows 7 computer, with the same module. Any help is greatly appreciated. Thanks, Dan