# 3.7.5git core dumps **URL:** \ **Category:** GNU Radio\ **Created:** [July 12, 2014, 8:01pm UTC](https://www.ruby-forum.com/t/3-7-5git-core-dumps/230921 "2014-07-12T20:01:49Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Post date:** [July 12, 2014, 8:01pm UTC](https://www.ruby-forum.com/t/3-7-5git-core-dumps/230921/1 "2014-07-12T20:01:49Z")
Built 3.7.5git, and updated UHD to latest. Builds fine. Gnuradio from the command line runs fine. When trying to run gnuradio-companion it core dumps: ~/gnuradio$ gnuradio-companion linux; GNU C++ version 4.8.1; Boost\_105300; UHD\_003.007.001-84-gd99ce4ef terminate called after throwing an instance of ‘std::runtime\_error’ what(): rpcmanager: Aggregator not in use, and a rpc booter is already registered Aborted (core dumped) Any advice? – Tom, N5EG ---
**Author:** ![Tom\_McDermott](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/9fc29f/32.png) [@Tom\_McDermott](https://www.ruby-forum.com/u/Tom_McDermott)\ **Post date:** [July 12, 2014, 8:14pm UTC](https://www.ruby-forum.com/t/3-7-5git-core-dumps/230921/2 "2014-07-12T20:14:56Z")
On Sat, Jul 12, 2014 at 2:00 PM, Tom McDermott [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > registered > > Aborted (core dumped) > > Any advice? > > – Tom, N5EG Well, shoot. I was really hoping that was just me and something weird I had done to my system. I had a similar issue. I just removed my installed version of GR, deleted all my build files, and rebuilt. If it’s still causing you issue, you can try turning off ControlPort with -DENABLE\_GR\_CTRLPORT=False in the cmake command. I’m not sure what it is because this only happened on one of my machines. Potentially some weird interaction with Ice during the rebuild. Tom ---
**Author:** ![Tom\_McDermott](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/9fc29f/32.png) [@Tom\_McDermott](https://www.ruby-forum.com/u/Tom_McDermott)\ **Post date:** [July 12, 2014, 9:12pm UTC](https://www.ruby-forum.com/t/3-7-5git-core-dumps/230921/3 "2014-07-12T21:12:10Z")
I went back to build b5006c1 , rebuilt, and gnuradio-companion is running again… ~gnuradio$ git checkout b5006c1 System is Ubuntu 13.10, Ice3.5 – Tom, N5EG ---
**Author:** ![Tom\_McDermott](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/9fc29f/32.png) [@Tom\_McDermott](https://www.ruby-forum.com/u/Tom_McDermott)\ **Post date:** [July 12, 2014, 10:05pm UTC](https://www.ruby-forum.com/t/3-7-5git-core-dumps/230921/4 "2014-07-12T22:05:14Z")
On Sat, Jul 12, 2014 at 3:10 PM, Tom McDermott [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > I went back to build b5006c1 , rebuilt, and gnuradio-companion is running > again… > > ~gnuradio$ git checkout b5006c1 > > System is Ubuntu 13.10, Ice3.5 > > – Tom, N5EG Did you try rebuilding before doing this? What was the original commit that was giving your trouble so we could see what’s changed since b5006c1 that could be causing this. Frankly, that shouldn’t have anything to do with anything. Tom ---
**Author:** ![Tom\_McDermott](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/9fc29f/32.png) [@Tom\_McDermott](https://www.ruby-forum.com/u/Tom_McDermott)\ **Post date:** [July 12, 2014, 10:15pm UTC](https://www.ruby-forum.com/t/3-7-5git-core-dumps/230921/5 "2014-07-12T22:15:59Z")
Hi Tom, The commit that caused the issue was 2bb2b31. I did a cmake, make, make install after checking out that commit. I will go back, clean out the build folder, checkout 2bb2b31 and try again. – tom, N5EG ---
**Author:** ![Tom\_McDermott](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/9fc29f/32.png) [@Tom\_McDermott](https://www.ruby-forum.com/u/Tom_McDermott)\ **Post date:** [July 12, 2014, 11:07pm UTC](https://www.ruby-forum.com/t/3-7-5git-core-dumps/230921/6 "2014-07-12T23:07:15Z")
Hi Tom, Thanks! Deleting the gnuradio/build directory, then rebuilding fixed the issue. – Tom, N5EG ---
**Author:** ![Tom\_McDermott](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/9fc29f/32.png) [@Tom\_McDermott](https://www.ruby-forum.com/u/Tom_McDermott)\ **Post date:** [July 12, 2014, 10:37pm UTC](https://www.ruby-forum.com/t/3-7-5git-core-dumps/230921/7 "2014-07-12T22:37:27Z")
On Sat, Jul 12, 2014 at 4:15 PM, Tom McDermott [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Hi Tom, > > The commit that caused the issue was 2bb2b31. I did a cmake, make, make > install after checking out that commit. > > I will go back, clean out the build folder, checkout 2bb2b31 and try again. > > – tom, N5EG Ok, thanks. It’s possibly due to the change in commit b4bbda76 that adjusted how one of the classes in ControlPort was defined. That should just take clearing things out and rebuilding to fix. As I said, it’s working fine for me now even though I saw a similar problem. Tom