Hi Gudjon, I should have done that at the beginning... here is the backtracing of gdb, something to see with string manipulation and interactions with python ?
======================================================== Starting program: /usr/bin/qtiplot [Thread debugging using libthread_db enabled] Program received signal SIGSEGV, Segmentation fault. 0xb65e88eb in strlen () from /lib/i686/cmov/libc.so.6 (gdb) bt #0 0xb65e88eb in strlen () from /lib/i686/cmov/libc.so.6 #1 0xb7b06a3b in PyString_FromFormatV () from /usr/lib/libpython2.5.so.1.0 #2 0xb7b55039 in PyErr_Format () from /usr/lib/libpython2.5.so.1.0 #3 0xb47cf956 in ?? () from /usr/lib/python2.5/site-packages/sip.so #4 0x08400f1e in ?? () #5 0x083f966b in ?? () #6 0x083e2f89 in ?? () #7 0x08188c0f in ?? () #8 0x081b973e in ?? () #9 0x081ba135 in ?? () #10 0x0811ae9c in ?? () #11 0xb65887a5 in __libc_start_main () from /lib/i686/cmov/libc.so.6 #12 0x080864b1 in ?? () ========================================================== regards, hubert -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org