Canon LBP7780CX User Manual page 845

Problem A manifest does not exist for the file specified as the application file.
Action This application cannot be installed. Contact the application developer.
The contents of the file for the application to install are incorrect or information is missing. Check
the file.
Problem Either the content of the files specified as application files is not correct or information is missing.
This application file cannot be installed. Check the file. If there are no problems with the files, contact the
Action
application developer or the application support help desk.
The contents of the file for the license to install are incorrect or information is missing. Check the
file.
Problem Either the content of the files specified as license files is not correct or information is missing.
This license file cannot be installed. Check the file. If there are no problems with the files, contact the
Action
application developer or the application support help desk.
The following information is missing in file for the specified application. Check the file. <Missing
information>
Problem The application cannot be installed because required information is not included in the application file.
Check the file. If there are no problems with the files, contact the application developer or the application
Action
support help desk concerning the <Missing Information>.
The following information in the specified application is incorrect. Check the file. <Inaccurate
information>
Problem 1 <Inaccurate information> in the application file cannot be recognized as correct information.
Action Contact the application developer or the application support help desk.
If the <Inaccurate information> is the MEAP Specifications, the application's MEAP specification values
Problem 2
and the printer's MEAP specification values do not match.
Action Contact your local authorized Canon dealer or sales representatives.
Cannot install this application because a code signing has not been confirmed to be valid. Get a valid
code signing.
Problem 1 Cannot confirm that there is a valid code signature inside the application file.
Action Perform the correct code signing operation for the application.
Problem 2 The file may have been altered.
Action Contact the application developer.
Cannot install this license because the specified application and license do not correspond. Try to
specify a path for the license file again.
The application cannot be installed because the specified license file does not correspond to the specified
Problem
application.
Action Specify the license file that corresponds to the application.