diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5b21c6834..d0135bbef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Change Log
 
+## Version 1.8.6
+
+### Bug Fixes
+- A change in the Glymur library affected how missing files were handled ([#675](../../pull/675))
+
 ## Version 1.8.5
 
 ### Improvements
diff --git a/sources/gdal/large_image_source_gdal/__init__.py b/sources/gdal/large_image_source_gdal/__init__.py
index 5a606c94e..ed4f952af 100644
--- a/sources/gdal/large_image_source_gdal/__init__.py
+++ b/sources/gdal/large_image_source_gdal/__init__.py
@@ -25,8 +25,11 @@
 import numpy
 import palettable
 import PIL.Image
-import pyproj
-from osgeo import gdal, gdal_array, gdalconst, osr
+from osgeo import gdal, gdal_array, gdalconst, osr  # noqa I001
+# pyproj stopped supporting older pythons, so its database is aging; as such,
+# if on those older versions of python if it is imported before gdal, there can
+# be a database version conflect; importing after gdal avoids this.
+import pyproj  # noqa I001
 from pkg_resources import DistributionNotFound, get_distribution
 
 import large_image
diff --git a/sources/openjpeg/large_image_source_openjpeg/__init__.py b/sources/openjpeg/large_image_source_openjpeg/__init__.py
index 1cc14c51a..c43df0065 100644
--- a/sources/openjpeg/large_image_source_openjpeg/__init__.py
+++ b/sources/openjpeg/large_image_source_openjpeg/__init__.py
@@ -92,6 +92,10 @@ def __init__(self, path, **kwargs):
         self._pixelInfo = {}
         try:
             self._openjpeg = glymur.Jp2k(largeImagePath)
+            if not self._openjpeg.shape:
+                if not os.path.isfile(self._largeImagePath):
+                    raise FileNotFoundError()
+                raise TileSourceError('File cannot be opened via Glymur and OpenJPEG.')
         except (glymur.jp2box.InvalidJp2kError, struct.error):
             raise TileSourceError('File cannot be opened via Glymur and OpenJPEG.')
         except FileNotFoundError: