Re: [ajp-bio-8012-exec-9] - Element SYS is undefined in CLIENT.

Hi 

Are you getting this error when you select Registry in the administrator?

The Administrator setting is used only if the attribute clientStorage is not specified in tag cfapplication and the variable clientStorage is not set in the Application.cfc.

Make sure you have client variables set up correctly in cfide and check that they are enabled in your Application.cfc file

Also, you have upgraded to CF 10 from CF 4.5, did you run the code analyzer?

Thanks

VJ