Crash on some lpe whith path parameters at Ctrl+Z

[Jabiertxof]

Steps to reproduce:
Start inkscape
Create a ellipse, convert to path.
Create another ellipse, convert or not to path -both crash-,
Group both.
Apply Bend or Envelope
Move a path parameter -the path, a node-.
Whith path parameter active...
Ctrl-Z tree times (maybe is important do it fast).
Crash.

http://pastebin.com/6Ng4SEeM

Sometimes have another backtrace, but i coulden`t reproduce in a few oportunities.

[su_v (suv-lp)]

Crash not reproduced with trunk based on provided steps, using
- on Ubuntu 13.10 (VM, 64bit), r13076 (PPA), r13084 (local build)
- on OS X 10.7.5 (64bit), r13113 (local build)

[su_v (suv-lp)]

Based on comments in earlier reports a known issue:
“It seems undoing lpe param changes on group lpes does not work. I tried with lpe-bend for example, and it crashes.”
<https://bugs.launchpad.net/inkscape/+bug/365903/comments/9>

Possibly related earlier reports:
Bug #365903 “lpe-knot for groups” comments 8+9
Bug #456503 “Undo crash and von Koch LPE”
Bug #484057 “adding path effect not properly recorded in undo history => crash”
Bug #518741 “Undoing an "envelope" transformation triggers a segfault”
Bug #540591 “Undo LPE editing in node tool crashes”
Bug #1075447 ”some path effects lead to empty elements in the undo history”

[Jabiertxof (jabiertxof)]

Still happans in a clean trunk of a Debian semi-stable 64

[Jabiertxof (jabiertxof)]

Any body have this problem? If yes i mark as duplicate of 456503

[Jabiertxof (jabiertxof)]

the fix in bug #540591 also fix this

[Jabiertxof (jabiertxof)]

Fixed on r.14975