IFeatureExtent Interface Problem Update

After some messing around today to figure out what was wrong, I finally found the problem. This included me doing alot of tests on the MXD, and even creating new MXD’s. I knew it wasnt my code as well

Eventually discovered that it was the SDE database that was the problem!. Very bizzare!.
Created a new SDE database and it worked fine. What could of been the difference?. Well it had to do with permissions on the namespace!. Finally thats resolved and code it now functional again.
Its the a pity that the errors coming back from ArcGIS Server, just are not there at all! Instead of displaying a message, it did nothing?. Would of saved alot of messing around. Oh well, all in a day worth of learning.

The bug I did find in the IFeatureExtent still exists though