Fixes #1 : Wrong context type

io_export_psx_tmesh.py

@@ -633,12 +633,12 @@ class ExportMyFormat(bpy.types.Operator, ExportHelper):
         
             TIMshift = 2
         
+        # Set context area to 3d view
+        previousAreaType = bpy.context.area.type
+        bpy.context.area.type="VIEW_3D"
         # Leave edit mode to avoid errors
-
         bpy.ops.object.mode_set(mode='OBJECT')
-
         # If set, triangulate objects of type mesh 
-
         if self.exp_Triangulate:
 
             for o in range(len(bpy.data.objects)):
@@ -2856,6 +2856,9 @@ class ExportMyFormat(bpy.types.Operator, ExportHelper):
         
         h.close()
         
+        # Restore previous area type
+        bpy.context.area.type = previousAreaType
+        
         return {'FINISHED'};
  
 def menu_func(self, context):