Tell me
The use of special characters such as (#,&,+) can potentially cause problems. This includes using these characters as part of files and naming assignments when they are created by the instructor.
Workaround
Instructors should not include special characters in the file names of documents they are uploading to Blackboard through the Assignment and Safe Assignment feature. Also, instructors when creating Assignments or Safe Assignments should not use special characters when naming them. Blackboard recommends the following guidelines for filenames: Characters a-z (upper or lower case), 0-9, period "." and underscore "_" are acceptable in filenames. Spaces in file names are converted to underscores in the name of the uploaded file. The number sign (#) should not be used in naming columns in the gradecenter either.