** (inkscape:7440): WARNING **: Failed to create path: invalid data in dc->cal1 or dc->cal2

[Sasa Paporovic]

I´am on openSUSE12.1 64bit with inkscape0.48.2.

I´ve just imported a .ai file.

Then I´ve started to paint around a bit with the calligraphic painting tool.

I´ve started inkscape in debug version with gdb7.3, so I saw this warning:

** (inkscape:7440): WARNING **: Failed to create path: invalid data in dc->cal1 or dc->cal2

There was no inkscape misbehavior observable to me.

The stacktrace is short , so I post it here:

** (inkscape:7440): WARNING **: Failed to create path: invalid data in dc->cal1 or dc->cal2
^C
Program received signal SIGINT, Interrupt.
0x00007ffff0eab423 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
87 int result = INLINE_SYSCALL (poll, 3, CHECK_N (fds, nfds), nfds, timeout);
(gdb) thread apply all bt

Thread 1 (Thread 0x7ffff7fa89a0 (LWP 7440)):
#0 0x00007ffff0eab423 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1 0x00007ffff4432a98 in g_main_context_poll (n_fds=7, fds=0x6ddd890, timeout=33, context=0x13811b0, priority=<optimized out>) at gmain.c:3386
#2 g_main_context_iterate (context=0x13811b0, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3068
#3 0x00007ffff44332c2 in g_main_loop_run (loop=0x23f4460) at gmain.c:3281
---Type <return> to continue, or q <return> to quit---
#4 0x00007ffff66f6ec7 in IA__gtk_main () at gtkmain.c:1256
#5 0x00000000006842b0 in sp_main_gui(int, char const**) ()
#6 0x00000000006697a8 in main ()

[Alvin Penner (apenner)]

not reproduced on Windows 7, Inkscape 0.48.2.
When I originally tried to open the file, I got a warning message because of the 'a umlaut' in the name, and the file preview did not work. So I removed the umlaut and the file opened normally.
- can you indicate whether the problem was caused by this specific file, or was it caused by the calligraphic tool?

[Sasa Paporovic (melchiaros)]

Q:- can you indicate whether the problem was caused by this specific file, or was it caused by the calligraphic tool?

A:Not until now; I am new to inkscape and have not much experience to decide. So may be both in conjunction.

[Sasa Paporovic (melchiaros)]

Weel, I tend more to the caligraphic tool. It was on default settings; have not used it since installation of inkscape.

[Alvin Penner (apenner)]

- similar to Bug 247166?
- could you try to reproduce this bug using your own drawing with the calligraphic tool?

[Sasa Paporovic (melchiaros)]

I am already on this the last hour, but it seems to be a one time one.

-> After the last hour I am sure this is to much on random as I can give a workflow for reproducing when I should hit it by luck, which seems to be necessary here.

[Sasa Paporovic (melchiaros)]

I agree that this here is most properly a duplicate of Bug 247166.

[Alvin Penner (apenner)]

reproduced on Windows 7, Inkscape 0.48.2, using a blank drawing and the calligraphic tool. Get multiple warnings as below. The trick seems to be to use very short strokes, clicking the left button on and off quickly.

** (inkscape.exe:3284): WARNING **: Failed to create path: invalid data in dc->cal1 or dc->cal2

** (inkscape.exe:3284): WARNING **: Failed to create path: invalid data in dc->cal1 or dc->cal2

[su_v (suv-lp)]

Proposing to link as duplicate to
Bug #247166 “calligraphic pen stroke sometimes fails”
<https://bugs.launchpad.net/inkscape/+bug/247166>
and adding any new findings there - I don't see anything in this bug report which would indicate that this is a different issue (and bug #247166 still waits to be confirmed i.e. reproduced).

[Sasa Paporovic (melchiaros)]

In reply to comment #8:

Yes, it is like you describe: I´ve also catched it, but my internet connection broke down.

I´ve done it in a way, that I paintet with long stronks over and over and shorten them over time(all in the same direction). Then clicking very fast on the center of this.

It seems to be like that, that when you hit with clicking one of the border lines of the strokes(probability is high in the center) the warning comes up. -> I have this way easy around 30 warnings.

[Sasa Paporovic (melchiaros)]

In reply to #9 ; @ ~suv:

I would mark this here as duplicate, but I know launchpad not so much(mostly on bugzilla)

Ah, I´ve found it.

I copy Alvin´s post and my last one over there.