Using TimothyHa's LibraryLogos utility to access library.logos.com via Internet Explorer on my desktop.
Several of the books in my library are missing their book cover icons. They just show up as a red "X":

The books this happens for are:
131 Christians Everyone Should Know
BiblePlaces.com Image Library
Cascadia Syntax Graphs of the New Testament: Glossary
Church Administration: Effective Leadership for Ministry
Collins Thesaurus of the Bible
Commentary on the New Testament Use of the Old Testament
A Concise Dictionary of the Words in the Greek Testament and the Hebrew Bible
Dictionary for Theological Interpretation of the Bible
Discovering John
Fresh Sermons
Fresh Start Devotionals
Harmony of the Gospels
Holbein's Bible Woodcuts
The Holy Bible, Translated from the Latin Vulgate
How to Write Narrative Sermons
King James Version
The Lexham English Bible
The Lexham Syntactic Greek New Testament: Sentence Analysis
Lexham Syntax Graphs of the Greek New Testament: Glossary
Logos Hymnal Media Resource
The New Testament in the Original Greek
Old Testament Survey: The Message, Form, and Background of the Old Testament
Open Door on John
Open Door on Mark
Opening Up ... (entire series)
The OpenText.org Syntactically Analyzed Greek New Testament
Philo and Holy Scripture: or, The Quotations of Philo from the Books of the Old Testament (Apparatus)
A Popular Account of the Ancient Egyptians, Volume 1
A Popular Account of the Ancient Egyptians, Volume 2
Septuagint with Logos Morphology
Stereoscopic Images of the Middle East
Summarized Bible: Complete Summary of the New Testament
Summarized Bible: Complete Summary of the Old Testament
The Treasury of Scripture Knowledge
Zondervan Dictionary of Bible Themes