# segmentation fault

**URL:** <https://forum.mothur.org/t/segmentation-fault/381>\
**Category:** mothur bugs\
**Created:** [October 21, 2010, 3:37am UTC](https://forum.mothur.org/t/segmentation-fault/381 "2010-10-21T03:37:17Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![abissett](https://avatars.discourse-cdn.com/v4/letter/a/54ee81/32.png) [@abissett](https://forum.mothur.org/u/abissett)\
**Post date:** [October 21, 2010, 3:37am UTC](https://forum.mothur.org/t/segmentation-fault/381/1 "2010-10-21T03:37:17Z")

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Hi

I’ve been running mothur 1.13 on a ubuntu 64-bit machine successfully for some time now. I’ve since installed it on another, more powerful machine and have run into and error. the error occurs when I try to run screen.seqs (i’ve successfully run align, summary, etc). The error is as follows:

tragus:09568] \*\*\* Process received signal \*\*\*  
[tragus:09568] Signal: Segmentation fault (11)  
[tragus:09568] Signal code: Address not mapped (1)  
[tragus:09568] Failing at address: 0xb82000  
[tragus:09568] [0] /lib/libpthread.so.0(+0xf8f0) [0x7f55ca3e18f0]  
[tragus:09568] [1] /lib/libc.so.6(memcpy+0x15b) [0x7f55ca0d5dbb]  
[tragus:09568] [2] mothur(\_ZN17ScreenSeqsCommand9driverMPIEiiRP11ompi\_file\_tS2\_S2\_RSt6vectorImSaImEERSt3setISsSt4lessISsESaISsEE+0x118) [0x750e58]  
[tragus:09568] [3] mothur(\_ZN17ScreenSeqsCommand7executeEv+0xa78) [0x75b218]  
[tragus:09568] [4] mothur(\_ZN14InteractEngine8getInputEv+0x52f) [0x5a031f]  
[tragus:09568] [5] mothur(main+0x102c) [0x68c77c]  
[tragus:09568] [6] /lib/libc.so.6(\_\_libc\_start\_main+0xfd) [0x7f55ca06dc4d]  
[tragus:09568] [7] mothur() [0x4532b9]  
[tragus:09568] \*\*\* End of error message \*\*\*  
Segmentation fault

I’m running this installation on ubuntu 10.04.1 LTS, 64-bit, with dual quad-core processors and 48Gb RAM.

Any suggestions as to the cause of the error and potential fixes would be greatly appreciated,

Thanks,

Andrew