MWE compiles; full file doesn't

[Rich Shepard]

This is a new one for me: the full document won't compile (but it did one
time) while the MWE compiles each time. The error is in the heading; the MWE
has my company logo (.pdf not attached), a title, a subtitle and a date. The
date (or the last line of the subtitle) is highlighted when the build fails.

The whole document has the same, plus the document content.

The entire lyx error file is attached.

I'm not seeing why I cannot compile the entire doc.

Help's needed.

Rich
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#LyX 2.3 created this file. For more info see http://www.lyx.org/
\lyxformat 544
\begin_document
\begin_header
\save_transient_properties true
\origin unavailable
\textclass scrreprt
\begin_preamble
\date{}
\usepackage{ftnxtra}
\usepackage{mathpazo,amssymb}
\usepackage{graphicx,relsize}
\usepackage{scrlayer-scrpage}
\usepackage{xcolor,colortbl}
\usepackage{chngcntr}
\counterwithout{figure}{section}
\definecolor{lightgray}{gray}{0.8}
\pagestyle{scrheadings}
\lehead{Biological Evaluation}
\rohead{Biological Evaluation}
\refoot{Applied Ecosystem Services, LLC}
\lofoot{Applied Ecosystem Services, LLC}
\automark*{section}
\end_preamble
\options headsepline=on, footsepline=on
\use_default_options true
\maintain_unincluded_children false
\language english
\language_package default
\inputencoding utf8
\fontencoding global
\font_roman "default" "default"
\font_sans "default" "default"
\font_typewriter "default" "default"
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\font_sc false
\font_osf false
\font_sf_scale 100 100
\font_tt_scale 100 100
\use_microtype false
\use_dash_ligatures true
\graphics default
\default_output_format pdf2
\output_sync 0
\bibtex_command biber
\index_command default
\paperfontsize default
\spacing single
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\papersize letterpaper
\use_geometry true
\use_package amsmath 1
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\cite_engine biblatex-natbib
\cite_engine_type authoryear
\biblatex_bibstyle authoryear
\biblatex_citestyle authoryear
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\paperorientation portrait
\suppress_date false
\justification true
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\index Index
\shortcut idx
\color #008000
\end_index
\leftmargin 2cm
\topmargin 4cm
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\headsep 1.5cm
\secnumdepth 2
\tocdepth 2
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\paperpagestyle plain
\tracking_changes false
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\html_math_output 0
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\html_be_strict false
\end_header

\begin_body

\begin_layout Titlehead
\begin_inset Graphics
	filename /home/rshepard/documents/templates/llc-letterhead.pdf
	width 100text%
	BoundingBox 0bp 0bp 528bp 157bp
	clip

\end_inset


\end_layout

\begin_layout Title
Title goes here
\end_layout

\begin_layout Subtitle
Prepared for:
\begin_inset Newline newline
\end_inset

some agency's
\begin_inset Newline newline
\end_inset

Regulatory Branch
\end_layout

\begin_layout Date
\begin_inset ERT
status open

\begin_layout Plain Layout


\backslash
today
\end_layout

\end_inset


\end_layout

\end_body
\end_document