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

[ajp-bio-8012-exec-9] - Element SYS is undefined in CLIENT. The specific sequence of files included or processed is:

We are getting the errow quite frequently when moved from ColdFusion 4.5 to ColdFusion 10 recently. I tried to use the default client variable storage to registry. Someone help me out on this error rleated to client varaibles? I'm seeing this issue recently after upgrading to CF10.