[Bug 36704] "Manage Sheets ..." dialogue box crashes Gnumeric

[David Hillshafer]

Public bug reported:
https://launchpad.net/malone/bugs/36704

Affects: gnumeric (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
OS Version: Dapper Drake
Kernel Package: linux-image-2.6.15-19-amd64-k8
Program: Gnumeric
Package Version: 1.6.3-0ubuntu1

How to recreate the problem: 
1. open Edit > Sheet > Manage Sheets...
2. select "Add"
3. crash

Testing Notes
1. Tested "Insert" and "Append" functions directly. It did not reproduce the problem.
2. Also tested on a similarly configured (Dapper) Thinkpad T40P. It did not reproduce the problem.