I get a "! LaTeX Error: Unknown graphics extension: .1.png" error from:
Other than renaming the file or creating a copy of the file with a different name, how can I tell LaTex that this is a known graphics extension?
Renaming the file would be a big hassle. The png files are auto-generated from another application and there are already 50,000+ files in the folder. Other applications are expecting this specific naming format. If I have to, I'll go the route of creating better named copies of the png files and deleting them after the document is generated.