segmentation fault


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/ [0x7f55ca3e18f0]
[tragus:09568] [ 1] /lib/ [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/ [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,