You may get the following error if you are missing a semicolon somewhere in your CFSCRIPT block - you will also get this error if you are missing an ending cfscript tag, however it is more likely that you are just missing a semicolon somewhere.
Context validation error for tag cfscript.The start tag must have a matching end tag. An explicit end tag can be provided by adding </cfscript>. If the body of the tag is empty you can use the shortcut <cfscript .../>.