If a UniUploader user chooses to add a new addon to their collection at the minute they have to tick the new addon and either close and reopen UniUploader, or become an advanced user, go into 'Updater' and select 'Synchronize'

My suggestion is to place an 'Update' button alongside the 'Collapse All' and 'Expand All' buttons under the addon tree, but right-aligned with the tree control.

This would call the 'UpdateAddons();' function as part of another thread, just like Synchronize does, but without all the UniUploader version checking etc.

Nice idea

I agree with this idea. I was just now browsing the program in basic mode to find out how to update add ons without going to advanced mode, and came by here to see if there was something I was missing.