[asllearner]

I had a bit of crash on my iMac running 10.13.4 and did a bunch of diagnositics. I forced a shutdown of Calibre. Since that, when I open Calibre all I get is a grey screen. I get the tool tips that are corrects when I hover over the grey part, so "underneath" everything is there, but all the windows show only grey. I ran debug mode, and all was fine, and here is the debug output.

Spoiler:

libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
EpubMerge: DEBUG: 2018-04-27 08:20:59,339: calibre_plugins.epubmerge.epubmerge_plugin(152): macmenuhack file_path:/Users/donnodd/Library/Preferences/calibre/plugins/fanficfare_macmenuhack.txt
libpng warning: iCCP: known incorrect sRGB profile
calibre Debug log
calibre 3.22.1 embedded-python: True is64bit: True
Darwin-17.5.0-x86_64-i386-64bit Darwin ('64bit', '')
('Darwin', '17.5.0', 'Darwin Kernel Version 17.5.0: Mon Mar 5 22:24:32 PST 2018; root:xnu-4570.51.1~1/RELEASE_X86_64')
Python 2.7.12
OSX: ('10.13.4', ('', '', ''), 'x86_64')
Interface language: None
DEBUG: 0.0 GetFileName::__init__.py - loading translations
DEBUG: 0.0 GetFileName::__init__.py - loading translations
Successfully initialized third party plugins: DeDRM (6, 6, 0) && Clean Metadata (0, 0, 6) && View Manager (1, 4, 3) && EpubSplit (2, 4, 0) && Annotations (1, 7, 0) && Webscription (1, 1, 0) && Favourites Menu (1, 0, 4) && EpubCheck (0, 1, 2) && Amazon.com Multiple Countries (1, 0, 0) && Manage Series (1, 2, 8) && Find Duplicates (1, 6, 3) && Consolidate All Library Metadata (2, 0, 32) && Quick Preferences (1, 4, 1) && Copy Cover To Device (2, 0, 0) && Generate Cover (1, 5, 21) && Barnes & Noble (1, 2, 15) && Extract ISBN (1, 4, 4) && Walk Search History (1, 3, 1) && djvumaker (1, 0, 2) && Diaps Editing Toolbag (0, 3, 5) && User Category (1, 5, 3) && MultiColumnSearch (1, 0, 74) && EpubMerge (2, 2, 0) && Job Spy (1, 0, 113) && GetFileName (0, 0, 12) && Goodreads (1, 1, 14) && Prettify Cover 0.9.12 && Resize Cover (1, 0, 2) && Open With (1, 5, 10) && KePub Metadata Reader (3, 0, 2) && Import List (1, 3, 0) && Library Splitter (1, 0, 0) && Save Composite Custom Columns (1, 1, 0) && Quality Check (1, 9, 11) && Search The Internet (1, 7, 6) && Library Codes (1, 0, 30)
calibre 3.22.1 embedded-python: True is64bit: True
Darwin-17.5.0-x86_64-i386-64bit Darwin ('64bit', '')
('Darwin', '17.5.0', 'Darwin Kernel Version 17.5.0: Mon Mar 5 22:24:32 PST 2018; root:xnu-4570.51.1~1/RELEASE_X86_64')
Python 2.7.12
OSX: ('10.13.4', ('', '', ''), 'x86_64')
Interface language: None
Successfully initialized third party plugins: DeDRM (6, 6, 0) && Clean Metadata (0, 0, 6) && View Manager (1, 4, 3) && EpubSplit (2, 4, 0) && Annotations (1, 7, 0) && Webscription (1, 1, 0) && Favourites Menu (1, 0, 4) && EpubCheck (0, 1, 2) && Amazon.com Multiple Countries (1, 0, 0) && Manage Series (1, 2, 8) && Find Duplicates (1, 6, 3) && Consolidate All Library Metadata (2, 0, 32) && Quick Preferences (1, 4, 1) && Copy Cover To Device (2, 0, 0) && Generate Cover (1, 5, 21) && Barnes & Noble (1, 2, 15) && Extract ISBN (1, 4, 4) && Walk Search History (1, 3, 1) && djvumaker (1, 0, 2) && Diaps Editing Toolbag (0, 3, 5) && User Category (1, 5, 3) && MultiColumnSearch (1, 0, 74) && EpubMerge (2, 2, 0) && Job Spy (1, 0, 113) && GetFileName (0, 0, 12) && Goodreads (1, 1, 14) && Prettify Cover 0.9.12 && Resize Cover (1, 0, 2) && Open With (1, 5, 10) && KePub Metadata Reader (3, 0, 2) && Import List (1, 3, 0) && Library Splitter (1, 0, 0) && Save Composite Custom Columns (1, 1, 0) && Quality Check (1, 9, 11) && Search The Internet (1, 7, 6) && Library Codes (1, 0, 30)
devicePixelRatio: 1.0
logicalDpi: 72.0 x 72.0
physicalDpi: 109.000001637 x 109.000001637
Using calibre Qt style: True
[0.00] Starting up...
[0.02] Initializing db...
[0.84] db initialized
[0.84] Constructing main UI...
DEBUG: 0.0 Annotations plugin: Error loading libiMobileDevice. This hasn't worked for a while, and is blacklisted in calibre v3.
DEBUG: 0.0 Annotations plugin: Error is: No module named idevice.libimobiledevice
DEBUG: 0.0 Annotations::reader_app_support.py - loading translations
DEBUG: 0.0 Annotations::common_utils.py - loading translations
DEBUG: 0.0 Annotations::appearance.py - loading translations
DEBUG: 0.0 Annotations::config.py - loading translations
DEBUG: 0.0 Annotations::annotated_books.py - loading translations
DEBUG: 0.0 Annotations::action.py - loading translations
MCS has finished initialization...
Job Spy has begun initialization...
Calibre, and hence Job Spy, was gracefully shut down last time? True
Last time daemon started: never
Last time daemon failed: never
Total daemon starts inception_to_date: 0
Total daemon failures inception-to-date: 0
Job Spy has finished initialization...
[8.83] main UI initialized...
[8.83] Started up in 8.83 seconds with 11533 books
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
2018-04-27 08:22:27.592 Calibre[634:13220] deliverNotificationWithTitle()
2018-04-27 08:22:27.666 Calibre[634:13220] OS X 10.13, zestyWin loaded...
* Notification delivered.