# 6.13.3353

## Bug Fixes

### Designer

* The Update Check spinner did not stop after completion
* `PageContentPlaceholder` could be copied
* Session Variables appeared in Custom Type dropdowns
* Pasting a Grid converted columns to rows
* Undoing a Grid deletion did not restore the rows to their initial state
* Importing an empty string as a Type threw a "Value cannot be null" exception
* Page names could use reserved names (Admin, Authentication, Error, Logout, Callback)
* The version hyperlink in the About window pointed to an outdated URL

### Web App

* Using a Variable reference in `.find(...)` caused an "Unexpected reserved word" exception
* Nested Grids displayed items vertically instead of in table form
* Data overflow returned an incorrect error message
* Control validation within a Repeater threw "Cannot read properties of undefined" exceptions

### Server

* Adding an admin user to a published application failed with a "Username '' is invalid" error