- solved issue #355 - when the tool diameter field in the Edit → Preferences → Geometry → Geometry General → Tools → Tool dia is only one the app failed to read it

FlatCAMObj.py

@@ -3879,15 +3879,18 @@ class FlatCAMGeometry(FlatCAMObj, Geometry):
                 if def_key == opt_key:
                     self.default_data[def_key] = deepcopy(opt_val)
 
-        try:
-            temp_tools = self.options["cnctooldia"].split(",")
-            tools_list = [
-                float(eval(dia)) for dia in temp_tools if dia != ''
-            ]
-        except Exception as e:
-            log.error("At least one tool diameter needed. Verify in Edit -> Preferences -> Geometry General -> "
-                      "Tool dia. %s" % str(e))
-            return
+        if type(self.options["cnctooldia"]) == float:
+            tools_list = [self.options["cnctooldia"]]
+        else:
+            try:
+                temp_tools = self.options["cnctooldia"].split(",")
+                tools_list = [
+                    float(eval(dia)) for dia in temp_tools if dia != ''
+                ]
+            except Exception as e:
+                log.error("FlatCAMGeometry.set_ui() -> At least one tool diameter needed. "
+                          "Verify in Edit -> Preferences -> Geometry General -> Tool dia. %s" % str(e))
+                return
 
         self.tooluid += 1