Thanks for your code. I can reproduce it and will log this defect. You have 2 options as a workaround...
- If you do not use Code Analysis, disable it by unchecking "Check Rules as you type" on the "Code Analysis | General" page in Toad's Options.
- If you use Code Analysis you can copy the RuleUniverse.xml from your prior Toad install folder and replace the one in your beta folder with the older. Do this with Toad closed. You will need to do this every time you install a newer beta update.