Description of problem:
The program starts, but when you try to open a tab "BROWSE" and go to the tree, the program "crashes"

Version-Release number of selected component:
gq-1.3.4-24.fc23

Additional info:
reporter:       libreport-2.6.3
backtrace_rating: 4
cmdline:        gq
crash_function: type_node_check_conformities_UorL
executable:     /usr/bin/gq
global_pid:     27880
kernel:         4.2.3-300.fc23.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 type_node_check_conformities_UorL at gtype.c:3459
 #1 type_node_conforms_to_U at gtype.c:3504
 #2 g_type_is_a at gtype.c:3531
 #3 gq_formfill_set_dt_handler at gq-formfill.c:287
 #4 add_schema_attrs at tinput.c:377
 #5 formlist_from_entry at gq-formfill.c:828
 #6 input_form_set_entry_full at gq-input-form.c:303
 #7 browser_tree_selection_changed at gq-tab-browse.c:360
 #8 _g_closure_invoke_va at gclosure.c:864
 #11 _gtk_tree_selection_internal_select_node at gtktreeselection.c:1427