Is there a way to tell Organiser to display all items whose thumbnail is broken (with icons looking like a sheet of paper that is ripped: excluding any "?" icons that show the need to reconnect links)? Does organiser automatically start thumbnail generation at Start Up if it did not complete thumbnail generation before its previous shutdown? Background to Questions: I had been carefully importing various folders into a new Catalog on a new Windows 10 trial installation on my HP laptop (i5, 4GB RAM 120GB SSD). All went OK until about the third import where the "creating thumbnails" process stuck with a spinning circle which showed progress something like "38746 of 48726". I left it overnight but saw no change. Organiser would not respond to the close "X" (top right of window) and after forcing closure Organiser kept crashing on attempting startup (after briefly showing "Initialising Main Interface" and a very brief view of the Organiser main windows. Its Catalog apeared to be the problem as it would open a different Catalog OK. Because Windows 10 Update was badly broken on this laptop (thanks Microsoft) I put a trial installation of PSE onto my new Dell laptop (i7, 16GB RAM, 512SSD) and started again from scratch. Importing some folders into the Dell's PSE Organiser showed similar problems in that at least one folder got stuck with the thumbnail generation process showing (for example) 1075 of 1079. But after waiting some hours as a precaution I could close PSE normally: it would restart without a problem and without any apparent mention of generating thumbnails. I concluded the broken state of Windows 10 on my HP laptop was the reason for PSE refusing to close whilst trying to generate thumbnails but some thumbnail generation problem clearly remained. I wondered if any of my old files were corrupt (some came from recovery of a failed hard drive) and causing the thumbnail generator to "hang" so I paused my importing to investigate. I scanned my image file collection with "Bad Peggy" (Freeware) which found around 500 files (out of about 154,000) to complain about. In particalar 8 were listed as "Truncated File - Missing EOI marker". 3 of these had been excluded automatically by PSE Organiser during Import as "Bad file (etc)" but one had been imported and the result was a "broken thumnail" icon. Viewed using Irfanview that particular file had a small strip of the image missing (bottom right) and another of the 8 had a strip of the image across the bottom missing: 5 of the 8 could not be opened in Irfanview (including the 3 that PSE refused to import). I am happy to delete all 8 files (and remove from PSE catalog where already imported). But it would be very useful to get Organiser to show me if any other broken thumbnails exist (both now and when I finally complete Importing) - hence my first question above. So far I have not spotted any problem with PSE file Import or Thumbnail generation in realtion to files flagged by Bad Peggy as: "Not a JPEG file. Starts with" followed by one of: 0xEe 0xFF, 0x00 0x00, 0xFF 0xFF "Java heap space" (probably some sort of error thrown by Java software used in Bad Peggy - may or may not matter) I've removed from my collection the few files flagged by Bad Peggy as "Corrupt JPEG data" (4 variants) and I presume the one file flagged "Embedded colour profile is invalid: ignored" will not cause a problem when Imported...
... View more