Tvheadend

i've built/installed tvheadend/trunk (git-7910c50) on linux/64. it's config'd to use schedulesdirect.org as a channel source, and is connected to an HDHomeRun-ATSC. On initial start, data is retrieved, EPG is populated, and I can watch LiveTV 'in' tvheadend with browser plugin,

Jan 15 08:30:09 pvr tvheadend[16193]: dvr: Creating new configuration ''
    Jan 15 08:30:09 pvr tvheadend[16193]: CSA: Using SSE2 128bit parallel descrambling
    Jan 15 08:30:09 pvr tvheadend[16193]: START: HTS Tvheadend version git-7910c50 started, running as PID:16193 UID:107 GID:33, settings located in '/var/lib/tvheadend//.hts/tvheadend'
    Jan 15 08:30:11 pvr tvheadend[16193]: xmltv: Grabbing "North America (Data Direct)" using command "/usr/bin/tv_grab_na_dd" 
    Jan 15 08:30:34 pvr tvheadend[16193]: xmltv: /usr/bin/tv_grab_na_dd: Parsing completed. XML contained 31 channels, 6808 events, 205 new events injected in EPG
    Jan 15 08:38:11 pvr tvheadend[16193]: dvr: Saving configuration ''

@ service REstart, I get the following tvheadend segfault:

Jan 15 08:38:23 pvr tvheadend[16193]: STOP: Exiting HTS Tvheadend
    Jan 15 08:38:24 pvr tvheadend[16260]: EPG: Injected 205 event from disk database
    Jan 15 08:38:24 pvr tvheadend[16260]: dvr: Creating new configuration ''
    Jan 15 08:38:24 pvr tvheadend[16260]: CSA: Using SSE2 128bit parallel descrambling
    Jan 15 08:38:24 pvr tvheadend[16260]: START: HTS Tvheadend version git-7910c50 started, running as PID:16260 UID:107 GID:33, settings located in '/var/lib/tvheadend//.hts/tvheadend'
    Jan 15 08:38:25 pvr tvheadend[16260]: xmltv: Grabbing "North America (Data Direct)" using command "/usr/bin/tv_grab_na_dd" 
    Jan 15 08:38:48 pvr tvheadend[16260]: xmltv: /usr/bin/tv_grab_na_dd: Parsing completed. XML contained 31 channels, 6808 events, 0 new events injected in EPG
    Jan 15 08:39:46 pvr tvheadend[16260]: subscription: "HTTP" unsubscribing
    Jan 15 08:39:46 pvr tvheadend[16260]: subscription: "HTTP" direct subscription failed -- No hardware present
    Jan 15 08:39:49 pvr tvheadend[16260]: subscription: "HTTP" unsubscribing
    Jan 15 08:39:49 pvr tvheadend[16260]: subscription: "HTTP" direct subscription failed -- No hardware present
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: Signal: 11 in PRG: /usr/local/bin/tvheadend (git-7910c50) [31ffb0b4807912cd1cdaf95e40fb05291eb39564] CWD: /
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: Fault address 0x48 (Address not mapped)
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: Loaded libraries: /lib64/librt.so.1 /lib64/libdl.so.2 /lib64/libssl.so.1.0.0 /lib64/libcrypto.so.1.0.0 /lib64/libz.so.1 /lib64/libpthread.so.0 /lib64/libm.so.6 /lib64/libc.so.6 /lib64/ld-linux-x86-64.so.2 /lib64/libnss_compat.so.2 /lib64/libnsl.so.1 /lib64/libnss_nis.so.2 /lib64/libnss_files.so.2
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: Register dump [23]: 00000000007baa40 0000000000003fa2 00007f0cd2ffc1f8 0000000000000206 00007f0cd2ffc56c 00000000ffffffff 00007f0cd2ffce20 0000000000000003 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007f0cd2ffc310 0000000000000000 00007f0cdce96a65 00007f0cd2ffc220 00000000004116a9 0000000000010202 000000000000e033 0000000000000004 000000000000000e fffffffe7ffbfa17 0000000000000048
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: STACKTRACE
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: /usr/local/src/tvheadend/src/trap.c:139 0x41fb68
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: ??:0 0x7f0cdce97d00
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: /usr/local/src/tvheadend/src/subscriptions.c:192 0x4116a9
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: /usr/local/src/tvheadend/src/webui/webui.c:393 0x4318c5
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: /usr/local/src/tvheadend/src/http.c:344 0x40795d
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: /usr/local/src/tvheadend/src/http.c:375 0x407cc3
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: /usr/local/src/tvheadend/src/http.c:455 0x407e52
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: /usr/local/src/tvheadend/src/http.c:749 0x408208
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: /usr/local/src/tvheadend/src/tcp.c:397 0x40680d
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: ??:0 0x7f0cdce8ff05
    Jan 15 08:39:51 pvr tvheadend[16260]: CRASH: clone+0x6d  (/lib64/libc.so.6)
    Jan 15 08:39:51 pvr kernel: [129300.474104] tvheadend[16290]: segfault at 48 ip 00000000004116a9 sp 00007f0cd2ffc220 error 4 in tvheadend[400000+1b5000]