@MrG
The more I use RC1 the more I am convinced that something is not right:
Scenario #1: select a drive and click Analyze; then View Files; select all the files for defrag; return to the Drive tab; click Defrag....what is being defragged - only the selected files or the entire drive? The defrag seems to run noticeably longer than the previous version for just the selected files. After completing the defrag; Analyze again (no fragmented file are found); click Defrag anyway - a defrag begins....what is being defragged since there were no fragmented files nor was the "Defrag Drive" menu item selected.....??? The feedback should have been "No files to Defrag"....
Scenario #2: select a drive; click Analyze; View Files and select...say about 5 small files; return to the Drive tab and click Defrag.....what is being analyzed....it seems like WAY more than the files that were selected. The defrag operation appears to proceed as though either all of the files were selected or as though the entire drive is being defragged; After completing the defrag, Analyze again (no files found), click Defrag anyway....the defrag process begins again...

The feedback again should have been "No files to Defrag"
Scenario #3: select drive; Analyze; DO NOT select ANY files; click Defrag....a defrag begins....the feedback should have been (you guessed it) "No files to Defrag".....something is broken.
Scenario #4: select drive; DO NOT Analyze; click Defrag....a defrag begins....seem like a "No files to Defrag" or better yet, "No Analyze has been conducted" message should have shown up.....something feels broken.
Something appears and feels broken between this build and the previous build(s). The interface has become more cumbersome to use and the previously elegant and quick file defragging process seems lost and "feedback" to the user "feels" disconnected. Most importantly, the quick defragging of selected files seems replaced by a rather lengthy defrag of considerably more than just the selected files.
Please do not construe the comments negatively, rather, I love Defraggler and am offering constructive testing feedback. I am curious though, it also seems odd that you would make such a notable interface change as you moved from "beta" to "RC"...I would have thought that the progression to "RC" would in itself be a statement that the interface and features were frozen and that debugging the correct functionality had entered its final step....
Unfortunately, it feels that quite a bit has been destabilized (regression for sure) in this build....
galileo