I'm using Version 6.17 of EW, and it crashed the program 3 times this morning. Here's what happened: I removed the presentation (.ppt) files from "underneath" EW by moving the files from the presentation directory to the recycle bin. EW went into the dreaded Windows "is not responding" mode. I terminated the program, and restarted, and got exceptions on the next 3 startup/terminate sequences. I had to restore the removed files back to the presentation directory for EW to stabilize and continue.

Can I use window's file manager to manage the presentation manager (in later versions) without causing EW to crash? The UI removal process is slow, and somewhat clumsly.

When using UI to delete presentation files it also makes the necessary database changes to forget the presentations. You should be able to select the thumbnails using Shift-click or Ctrl-click to highlight multiple files and press Delete to remove them.

However, error handling in EW6 should be more benign and not crash this entire program.