![]() Termination Reason: Namespace SIGNAL, Code 0x4 Termination Signal: Illegal instruction: 4 But there you have it - if you’re seeing black rectangles for PDF pages in Preview in High Sierra, try calibrating your display.Building a CustoMac Hackintosh: Buyer's Guide It’s hard to imagine what set of dependencies could cause a display profile to blow out the rendering of PDF pages, but not thumbnails. That opens Apple’s built-in Display Calibrator app, which provides an assistant-aided set of steps to calibrate your display - the specific steps may vary between displays. To get started with that, open System Preferences > Displays > Color, and click the Calibrate button. Chris said that recalibrating the display worked for him too. User oakcan reported suffering from the same problem and resolved it by calibrating his display. The solution may have been simple, but it was far from obvious. In that discussion, which also revolved around Preview and High Sierra, the problematic PDFs had been scanned in Image Capture and opened fine on other Macs. Nothing I suggested made any difference, but after some more research, Chris reported back with the solution, which he found in a thread in the Apple Support Communities. When he sent me the PDF, it opened and displayed fine in Preview on my Mac, running the same versions of macOS and Preview. TidBITS reader Chris Lee wrote to ask if I’d heard of issues with a PDF’s thumbnails rendering correctly, but each actual page showing as a single large black rectangle in the latest version of Preview under macOS 10.13.2 High Sierra. Most of the time, the problems are limited to a single corrupt PDF that might be viewable or printable with Acrobat Reader instead of Preview, but sometimes the concerns go deeper. ![]() ![]() Thanks to our coverage of the problems PDFKit has faced in Sierra and High Sierra (see the article series “ PDFKit Problems”), I occasionally hear from readers who are having troubles of one sort or another with PDFs. #1611: OS updates, RIP iPod touch, iCloud Drive shared folder data loss risk, KDEConnect links iPhone to Linux.#1612: OS suggestions, new accessibility features, higher cellular prices, Chrome OS Flex for old Macs, Memorial Day hiatus.#1613: M2 MacBook Air and 13-inch MacBook Pro, long-awaited features coming to OS, watchOS 9, TidBITS website changes, tvOS and HomePod update.#1614: 2022 OS system requirements, WWDC 2022 head-scratcher features, travel tech notes from Canada.#1615: Why Stage Manager needs an M1 iPad, Limit IP Address Tracking problems, Citibank cryptocurrency confusion.
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