Error when using spell checker on Windows Vista 64
You attempted to use the spell checker on a 64-bit version of a Revit® product installed on the Window Vista™ 64-bit operating system, but you received the follow error message:
Access to C:\Program files\Revit
2009\Custom.DIC was denied
For more information on this issue, including potential causes, workarounds, and resolutions, see: AutoDesk Knowledge Base Article TS1093687.