Segfault when trying to open "Preferences" - "Tools"

[dark-penguin]

• Launch medit from a command line to see its output
• Click "Edit" - "Preferences" - "Tools"
• Observe the segfault:

(medit:1152): Moo-WARNING **: 15:30:30.119: in file mooutils/mooglade.c, line 1793, function parse_property: could not convert string '6' to an int

(medit:1152): Moo-CRITICAL **: 15:30:30.119: in file mooutils/mooglade.c, line 1198, function widget_new: Condition 'props != NULL' failed

(medit:1152): Moo-CRITICAL **: 15:30:30.119: in file ./plugins/usertools/mooedittools-exe-gxml.h, line 192, function gboolean exe_page_xml_build(ExePageXml*): Could not parse glade xml: could not convert '6' to property 'spacing'
Segmentation fault