Hello Seedingideas,
Thank you for your post. Here is the link http://download.macromedia.com/pub/coldfusion/10/cf10_mdt_updt.jar to download the Mandatory update.
To install the same:-
Open the command prompt.
cd to C:\ColdFusion10 and then run the command as follows C:\ColdFusion10\jre\bin\jre\java -jar cf10_mdt_updt.jar
Give full path of the file cf10_mdt_updt.jar depending on where it is downloaded. And follow the on-screen instructions.
Hope this helps.
Regards,
Anit Kumar