Here are a few reasons why you may experience difficulty opening a student’s files in Crocadoc:
1. The student’s file is not a PDF of MS Office document. Supported files in Crocadoc include: DOCX, DOC, PPT, PPTX, TXT, ODT, RTF, HTML, and HTM.
2. The student’s file is a spreadsheet. Spreadsheets are not supported using Crocadoc!
3. The system is being used during a high use time. During periods of high volume of the system the file may take longer to render, as files are opened and then converted to HTML5
Hope that helps! Cheers!